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Learn Python From Scratch - Functions & Strings

January 17, 2018 Unknown 1

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<span style="line-height: 107%;">Hi guys, hope you all are catching
along with previous Learn Python From Scratch tutorial, in this post you will
come across python functions and string operations. <span style="font-size: 12pt;"><o:p></o:p></span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhe6uYknTgHztRs5a1cT7KWlcC9IRCyFijc3WX3rB5BEstamS2iIua_xMtQ7kCzoUGIgy0fcHif_OYpq6HOANJzDpZjBIb4miyqh7jV_rttHphAiPurNfqS5YPdebPf8SLNbOtLvDOPE0M/s1600/function1.PNG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em; text-align: center;"><img border="0" data-original-height="324" data-original-width="754" height="136" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhe6uYknTgHztRs5a1cT7KWlcC9IRCyFijc3WX3rB5BEstamS2iIua_xMtQ7kCzoUGIgy0fcHif_OYpq6HOANJzDpZjBIb4miyqh7jV_rttHphAiPurNfqS5YPdebPf8SLNbOtLvDOPE0M/s320/function1.PNG" width="320" /></a><span style="line-height: 107%;"><b><span style="font-size: large;">Functions</span></b><span style="font-size: 12pt;"> </span>are a construct to structure
programs. They are known in most programming languages, sometimes also called <b>subroutines</b>
or <b>procedures</b>. Functions are reusable piece of code that can be invoked as many
times as required in the program and perform certain task.<o:p></o:p></span></div>
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<span style="line-height: 107%;">In Python a function is some reusable
code that takes arguments(s) as input, does some computation, and then returns
a result or results. We define a function using the def reserved word. We
call/invoke the function by using the function name, parentheses, and arguments
in an expression </span></div>
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<span style="line-height: 107%;"><span style="font-size: large;"><b>There are two kinds of functions in python.</b></span><o:p></o:p></span></div>
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<span style="line-height: 107%;">- 
Built-in functions that are provided as part of Python library -
print(), input(), type(), float(), int()<o:p></o:p></span></div>
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<span style="line-height: 107%;">- 
Functions that we define ourselves and then use<span style="font-size: 12pt;"><o:p></o:p></span></span></div>
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<span style="line-height: 107%;"><b><span style="font-size: large;">Building our own function:</span></b></span></div>
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<ul>
<li>We create a new
function using the def keyword followed by optional parameters in parentheses</li>
<li>We indent the body of
the function</li>
<li>This defines the
function but does not execute the body of the function</li>
</ul>
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<span style="line-height: 107%;"><b><span style="font-size: large;">Docstring:</span></b><span style="font-size: 12pt;"> </span>The first string after the
function header is called the docstring and is short for documentation string.
It is used to explain in brief, what a function does.<o:p></o:p></span></div>
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<span style="line-height: 107%;">Although optional, documentation is a
good programming practice. Unless you can remember what you had for dinner last
week, always document your code.<o:p></o:p></span></div>
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<span style="line-height: 107%;">In the above example, we have a
docstring immediately below the function header. We generally use triple quotes
so that docstring can extend up to multiple lines. This string is available to
us as __doc__ attribute of the function. For example:<o:p></o:p></span></div>
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<span style="line-height: 107%;">def greet(name):<o:p></o:p></span></div>
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<span style="line-height: 107%;">            """This
function greets to the person passed in as parameter"""<o:p></o:p></span></div>
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<span style="line-height: 107%;">            print("Hello,
" + name + ". Good morning!")<o:p></o:p></span></div>
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<span style="line-height: 107%;">Try running the following script with
the below addition: <o:p></o:p></span></div>
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print(greet.__doc__)</div>
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<span style="line-height: 107%;">You will get the output on your console as,</span></div>
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<span style="line-height: 107%;">>>> This function greets to
the person passed into the name parameter<o:p></o:p></span></div>
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<span style="line-height: 107%;">This is the end of the first topic of
discussion in this post which was functions. Now let’s see what does <b>"Strings"</b> in
python have to offer to a programmer.<span style="font-size: 12pt;"><o:p></o:p></span></span></div>
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<span style="line-height: 107%;"><span style="font-size: large;">A <b>String,</b></span></span></div>
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<ul>
<li>contiguous
series of characters delimited by single or double quotes<span style="font-size: 12pt;">. </span></li>
<li>A string literal is initialised with values in quotes. </li>
<li>Python
don’t have any separate data type for characters, so they are represented as a
single character string. </li>
<li>Strings in python are immutable, i.e. that once string
is created it can’t be modified.<span style="font-size: 12pt;"> </span></li>
<li>For strings, + operator
means “concatenate”. </li>
<li>When a string contains numbers, it is still a string but
they can be converted into numbers int().</li>
</ul>
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<span style="line-height: 107%;">We can get at any single character in
a string using an index specified in square brackets. The index value must be
an integer and starts at zero. If you try to attempt to access using index
beyond the length of the string python gives a traceback. The built-in function
to check the length of the string is len(). The string operations offered by
python are:<o:p></o:p></span></div>
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The method startswith() checks whether string starts with
str, optionally restricting the matching with the given indices start and end. </div>
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<span style="line-height: 107%;">It
has the following syntax:<o:p></o:p></span></div>
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<span style="line-height: 107%;"><b>str.startswith(str,
beg=0,end=len(string))</b>;<o:p></o:p></span></div>
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The replace() function is like a “search and replace”
operation in a word processor. It replaces all occurrences of the search string
with the replacement string. </div>
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<span style="line-height: 107%;">1. We use the <b>find()</b> function to search for a substring within
another string. </span></div>
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<span style="line-height: 107%;">2. <b>find()</b> finds the first occurrence of the substring. </span></div>
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<span style="line-height: 107%;">3. If the
substring is not found, <b>find()</b> returns -1.</span><o:p></o:p></div>
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 <span style="text-align: justify;">Slicing a string is a powerful tool in python strings wherein we can extract some part of a string. Slicing is performed using colon operator. We extend the square-bracket syntax a little, so that we can specify not only the starting position of the piece we want, but also where it ends. If we leave off the first number or the last number of the slice, it is assumed to be the beginning or end of the string respectively.</span><br />
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You can use ( > , <, <= , <= , == , !=  ) to compare two strings.<br />
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Python compares
string lexicographically i.e using ASCII value of the characters.<br />
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<span style="line-height: 107%;">1. Sometimes we want to take a string and remove whitespace at
the beginning and/or end.<o:p></o:p></span></div>
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<span style="line-height: 107%;">2. lstrip() and rstrip() remove whitespace at the left or right.<o:p></o:p></span></div>
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<span style="line-height: 107%;">3. strip() removes both beginning and ending whitespace.</span><o:p></o:p></div>
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<span style="line-height: 107%;"><span style="font-size: large;">Here are some of the most common
string methods,</span></span></div>
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<ol>
<li><b>s.lower(),
s.upper()</b> -- returns the lowercase or uppercase version of the string</li>
<li><b>s.strip() </b>--
returns a string with whitespace removed from the start and end</li>
<li><b>s.isalpha(), s.isdigit(), s.isspace().</b>..
-- tests if all the string chars are in the various character classes</li>
<li><b>s.startswith('other'),
s.endswith('other')</b> -- tests if the string starts or ends with the given other
string</li>
<li><b>s.find('other')</b>
-- searches for the given other string (not a regular expression) within s, and
returns the first index where it begins or -1 if not found</li>
<li><b>s.replace('old',
'new')</b> -- returns a string where all occurrences of 'old' have been replaced by
'new'</li>
<li><b>s.split('delimiter')</b>
-- returns a list of substrings separated by the given delimiter. The delimiter
is not a regular expression, it's just text. 'aaa,bbb,ccc'.split(',') ->
['aaa', 'bbb', 'ccc']. As a convenient special case s.split() (with no
arguments) splits on all whitespace chars.</li>
<li><b>s.join(list)</b> --
opposite of split(), joins the elements in the given list together using the
string as the delimiter. e.g. '---'.join(['aaa', 'bbb', 'ccc']) ->
aaa---bbb---ccc</li>
<li><b>s.replace(str1,
str2)</b> – this function is like search and replace operations where ot replaces
all occurences of the search string str1 by the replacement string str2.</li>
</ol>
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So here we are, at the end of the
post, lets summarize the topics we have seen today. Functions: What are they? Why are they used? How can we define a function? Strings: What are they? How are they used and various methods that provide some meaningful operations perform-able to these string. This concludes the
post, stay tuned for the next post on the topic of file operations, until then
guys enjoy your time browsing through other posts in the blog!! Please leave your questions in the comments section if any. </div>
</div>

Tutorials Learn Python From Scratch - Functions & Strings

Python – Functions and strings Hi guys, hope you all are catching along with previous Learn Python From Scratch tutorial, in this post...

Learn Python from Scratch - Conditional Execution

January 13, 2018 Unknown 2

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Ola pythonista's, so this is a follow
up of the previous post which was on the introduction of python. Here, I’m
going to talk about Conditional execution and iterations in python. Hope you
would find it interesting to browse.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZDJ7-NJ0dvU0AVIzJX5BjE-sgsf6Q-3niLMUntG7VofImNgX1Mq2AeL3sKjy6nTvxFcHpk9nYZc1o1PCThvvnlvO95xIYJ0gTeIjh7HD-8qzWq_SHpn-n6cSo82K1aUSDUP7JxVbZjew/s1600/if.PNG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em; text-align: center;"><img border="0" data-original-height="417" data-original-width="782" height="170" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhZDJ7-NJ0dvU0AVIzJX5BjE-sgsf6Q-3niLMUntG7VofImNgX1Mq2AeL3sKjy6nTvxFcHpk9nYZc1o1PCThvvnlvO95xIYJ0gTeIjh7HD-8qzWq_SHpn-n6cSo82K1aUSDUP7JxVbZjew/s320/if.PNG" width="320" /></a>There are many conditional constructs
in python, and the first one we are going to see is the unidirectional
branching statement, the prodigal construct: “if”.<o:p></o:p></div>
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An if statement precedes with a
condition that is checked and is recouped to a boolean expression and if it’s
results to true then a set of statement are executed otherwise they’re skipped
and the instructions after the construct body is executed. <o:p></o:p></div>
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Boolean expressions in python use
the following relational operators:</div>
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<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8iW1etxVQ-lztvQqCdFQ-BIPt8SDPZx55lF3gA4X_Uj_xyNP9IDOd1t9Qc9SpD5KBqQU_Ww14jmmNG4B4LlewO-iAthRDLZQvsNG_UxNofHUioMjWInQQU33xC3cUIGVmg0mUAtKckLw/s1600/relational_operators.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="291" data-original-width="403" height="231" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8iW1etxVQ-lztvQqCdFQ-BIPt8SDPZx55lF3gA4X_Uj_xyNP9IDOd1t9Qc9SpD5KBqQU_Ww14jmmNG4B4LlewO-iAthRDLZQvsNG_UxNofHUioMjWInQQU33xC3cUIGVmg0mUAtKckLw/s320/relational_operators.PNG" width="320" /></a></div>
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Indentation is an important
prospect of python programming language as the language doesn’t use the usual
flower braces to represent a construct body as in other high-level languages as
C++ or Java and hence an increase indent after conditional or looping statement
indicate the body of the construct and the indent is maintained to indicate the
scope of the block. To get back to level of the conditional or iteration
statement we reduce the indent to indicate the end of the block. <o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEikDEbuohK3Gy7m8Gbp3OgKYgHBQkhqpEp5FvVyKTCJF29WhXOEe5jEOVnjkRqA7kTQ2WwT_uk7IkljCiOku-1PsZ9WI_rWgD6RJtwptinWEGVDewyGyQ9IS_Omx35sa6nCpGCpNZaWVCA/s1600/meme1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="525" data-original-width="790" height="212" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEikDEbuohK3Gy7m8Gbp3OgKYgHBQkhqpEp5FvVyKTCJF29WhXOEe5jEOVnjkRqA7kTQ2WwT_uk7IkljCiOku-1PsZ9WI_rWgD6RJtwptinWEGVDewyGyQ9IS_Omx35sa6nCpGCpNZaWVCA/s320/meme1.jpg" width="320" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiztEKIq6SlVkam175_uK2DEioTShQLJVSJv6eirf7RyOhpSHh_OGKBrdpn3cSYum5vr_FxEqYlLpnshYQZPFQMjimlSfs2JbrCn3iqW5CSekpGXsxtcFQPYood4030-7uBFIjGz_HwYc0/s1600/meme3.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em; text-align: center;"><img border="0" data-original-height="692" data-original-width="720" height="307" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiztEKIq6SlVkam175_uK2DEioTShQLJVSJv6eirf7RyOhpSHh_OGKBrdpn3cSYum5vr_FxEqYlLpnshYQZPFQMjimlSfs2JbrCn3iqW5CSekpGXsxtcFQPYood4030-7uBFIjGz_HwYc0/s320/meme3.png" width="320" /></a>Two-way decisions are possible in
python by using if-else construct wherein if the condition evaluates to true a
set of statement are executed otherwise the body in the else construct is
executed and finally executed the rest of the instructions after the
conditional construct. Below is a snippet that depict two-way decision.<o:p></o:p></div>
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//flowchart and snippet <o:p></o:p></div>
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Mutli-branching decision is
possible by using an if-elif-else construct, where in if the condition
evaluates to true executes a set of statements and skips execution of the rest
of the conditional construct otherwise evaluate the next condition that
precedes the elif statement and if that evaluates the condition to true then a
set of instructions are executed otherwise executes the statements in the else
body.</div>
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<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg15GBGtX75y8RVry1QvcuBuGiqer1vl7QnBUKoCLTAeeQ4qsb1zHAX2e8CkTQYq5GSvc-HBqeMUAmwqj4Ja_bNw4109B_4cxso_9IA74QKvfTT7jCA9nnBnNdhbucNp03vejcpp9Me3JQ/s1600/multiway.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="382" data-original-width="696" height="218" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg15GBGtX75y8RVry1QvcuBuGiqer1vl7QnBUKoCLTAeeQ4qsb1zHAX2e8CkTQYq5GSvc-HBqeMUAmwqj4Ja_bNw4109B_4cxso_9IA74QKvfTT7jCA9nnBnNdhbucNp03vejcpp9Me3JQ/s400/multiway.PNG" width="400" /></a></div>
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This is the end of conditional
construct in python and before we can get to python iterations let’s discuss
about how to handle dangerous sections of code that raises an error that can be
maskable i.e. for which we can write a piece of code that acts when a set of
statements causes a traceback and tries to solve or bring the program out of
the troubleshoot problem else the program can terminate if not handled. This is
possible in python by use of the try/except structure. You surround a dangerous
section of code with try and except. If the code in the try works - the except
is skipped. If the code in the try fails - it jumps to the except section.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbuc3wIMWqz_lj6qqM8asp2UwVIgvbd_r08WiBy5-J0rMHYpJVAWRjnL5REPBi1VwEiP1Y9QWCHoWm-lQNCjMYlS_-PsICu1ptp9ONat-4LCsCDY-kbSjYTb1QI7WzLdl9DBGloSDXDlI/s1600/try_except.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="427" data-original-width="767" height="222" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbuc3wIMWqz_lj6qqM8asp2UwVIgvbd_r08WiBy5-J0rMHYpJVAWRjnL5REPBi1VwEiP1Y9QWCHoWm-lQNCjMYlS_-PsICu1ptp9ONat-4LCsCDY-kbSjYTb1QI7WzLdl9DBGloSDXDlI/s400/try_except.PNG" width="400" /></a></div>
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Now let’s understand python iterations
which is last topic of this post. What are iterations?? <span style="background: white; color: #222222;">They’re repetition of a set of statements. They can
be categorized into two kinds – definite and indefinite.<o:p></o:p></span></div>
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<span style="background: white; color: #222222;">While
loops are called “indefinite loops” because they keep going until a logical
condition becomes false. Sometimes it is a little harder to be sure if a loop
of such a kind will terminate or not. A while loop is written in a following
manner, its identified by the reserved word while and follows with a condition
that evaluates to a Boolean value and only if it’s true that the control flow
enter the loop body and hence the while loop is also called entry controlled
loop.<o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSRaX44XGkYi5yfyqPZW6ExiWEJOpkFMBJqA0TVyv6wbF10r7Yy1EyAuLiEyGc8z4H_LuENmAHGAceZzJarehZ7_5OdFmGq_PJ5pJyZHpusS6bDEV5Wgw79MUJ4_597PhkvQ8PpAIwCy4/s1600/while.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" data-original-height="404" data-original-width="798" height="202" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSRaX44XGkYi5yfyqPZW6ExiWEJOpkFMBJqA0TVyv6wbF10r7Yy1EyAuLiEyGc8z4H_LuENmAHGAceZzJarehZ7_5OdFmGq_PJ5pJyZHpusS6bDEV5Wgw79MUJ4_597PhkvQ8PpAIwCy4/s400/while.PNG" width="400" /></a></div>
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<span style="background: white; color: #222222;">For
loops are called “definite loops” because they execute the loop body for exact
number of times. We can write a loop to run the loop once for each of the items
in a set using the Python for construct. </span><span style="background-color: white; color: #222222;">Definite loops (for loops) have
explicit iteration variables that change each time through a loop.</span><span style="background-color: white; color: #222222;">  </span><span style="background-color: white; color: #222222;">These iteration variables move through the
sequence or set. The iteration variable “iterates” through the sequence
(ordered set). The block (body) of code is executed once for each value in the
sequence. The iteration variable moves through all of the values in the
sequence.</span></div>
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<span style="background: white; color: #222222;">The
“is” and “is not” operators in python that are used in logical expression. The
“is” operator implies is the same as but have more weight than the logical
operator “==”. The “is not” operator logically is opposite of the “is”
operator.<o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEioTjgMDrCPiS4TbedK-HsoPKoXuhV6hjpvD6_EoRRls_EIgjqK0q96HIh2lztXMI7ld7IqNVg4-K0FFrIlWUcUxtj1CbZVlKC4xMs3xYDtH-pYdWULtjpp4nFC3uaXTCQsgdjF-n8YcWw/s1600/is.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="247" data-original-width="420" height="188" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEioTjgMDrCPiS4TbedK-HsoPKoXuhV6hjpvD6_EoRRls_EIgjqK0q96HIh2lztXMI7ld7IqNVg4-K0FFrIlWUcUxtj1CbZVlKC4xMs3xYDtH-pYdWULtjpp4nFC3uaXTCQsgdjF-n8YcWw/s320/is.PNG" width="320" /></a></div>
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<span style="background: white; color: #222222;">So here
we are, at the end of the post, let’s summarise the topics we have seen today.
(……..) This concludes the post, stay tuned for the next post on the topic of functions
and string operations, until then guys enjoy your time browsing through other
posts in the blog!!</span><span style="text-align: left;"> </span></div>
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Tutorials Learn Python from Scratch - Conditional Execution

Ola pythonista's, so this is a follow up of the previous post which was on the introduction of python. Here, I’m going to talk abou...

Learn Python from Scratch - Introduction

January 12, 2018 Unknown 0

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<span lang="EN-US">Python is
the language of the Python Interpreter and those who can converse with it. An
individual who can speak Python is known as a Pythonista. It is a very uncommon
skill, and nearly all known <b>Pythonistas </b>use software initially developed by
Guido van Rossum.</span><o:p></o:p><br />
<span lang="EN-US"><br /></span></div>
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When we are at the python interpreter, it displays chevron
prompt (>>>) on the terminal, where it is asking you <b>“What’s next??”.</b></div>
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<b>How do we speak the language of python??</b><o:p></o:p></div>
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This must be the question on most of your minds when trying
to learn the language initially. Just like the English Language, we will first
start of by learning words, sentences and then paragraphs in python.<o:p></o:p></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbqrH36G51V1wdlubB4rLMVK-UOwb5Sm-97rXkeIeAWItPY1bdil_g1BWIulw4GvsiIReEBxGpFZFPVQuRaPBvYjDs-sGPYJcTsxY4tdaGiFlfIyy4xmk5nSEb7jopDjv-cmEn6ZBe1FE/s1600/reserved-words.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em; text-align: center;"><img border="0" data-original-height="197" data-original-width="481" height="162" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbqrH36G51V1wdlubB4rLMVK-UOwb5Sm-97rXkeIeAWItPY1bdil_g1BWIulw4GvsiIReEBxGpFZFPVQuRaPBvYjDs-sGPYJcTsxY4tdaGiFlfIyy4xmk5nSEb7jopDjv-cmEn6ZBe1FE/s400/reserved-words.jpg" width="400" /></a><b>Reserved Words:</b> They’re words that are predefined in the
python library and have some meaning. These words cannot be used as variables
or as a matter of fact to do anything that these words don’t offer. Some of
these reserved words that we would come across are stated in the figure alongside.<o:p></o:p><br />
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Constants and variables are other literals that are
supported by python. “<b>Constants</b>”, as the word suggests <span lang="EN-US">they’re fixed values such as numbers, letters,
and strings, where their value does not change</span> throughout the scope of
the program. <span lang="EN-US">A <b>variable </b>is a
named place in the memory where a programmer can store data and later retrieve
the data using the variable “name”</span>.<o:p></o:p></div>
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Since we programmers are given a choice in how we choose our
variable names, there is a bit of “best practice”, we name variables to help us
remember what we intend to store in them (“mnemonic” = “memory aid”). This can
confuse beginning students because well-named variables often “sound” so good
that they must be keywords. There are rules that have to be followed while
naming a variable so as to reduce ambiguity for the interpreter, and they’re:</div>
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<ol style="text-align: left;">
<li> <span style="text-indent: -18pt;">Must start with a letter or underscore _</span></li>
<li>Must consist of letters, numbers, and underscores</li>
<li>Case Sensitive</li>
<li>Cannot be Reserved Word.</li>
</ol>
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<o:p></o:p></div>
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Next comes sentences, or here we are specifically talking
about how do we code instruction in python. For simpler understanding let’s
start off with arithmetic expressions.<o:p></o:p></div>
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                Assignment
Statement: x=2<o:p></o:p></div>
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                Arithmetic
assignment: x=x+2<o:p></o:p></div>
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                Output
Statement: print(x)<o:p></o:p></div>
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So, what all did we come across in the previous three
instructions, operators, constants, variables and function.<o:p></o:p></div>
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<br /></div>
<div class="MsoNormal">
Numeric Expressions that are used in python are mentioned
below, //pic of operator operation table <o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
When we have so many operators for numeric expressions to
perform simple calculation, there must be a way python must know which of them
to do first, so to address this situation we will have to learn about the
concept of operator precedence, i.e. which operator takes precedence over the
others.<o:p></o:p></div>
<div class="MsoNormal">
<span lang="EN-US"><br /></span></div>
<div class="MsoNormal">
<span lang="EN-US">Highest
precedence rule to lowest precedence rule:<o:p></o:p></span></div>
<div class="MsoListParagraphCxSpFirst" style="text-align: left; text-indent: -18pt;">
</div>
<ol style="text-align: left;">
<li>Parentheses are always respected</li>
<li>Exponentiation (raise to a power)</li>
<li>Multiplication, Division, and Remainder</li>
<li>Addition and Subtraction</li>
<li>Left to right</li>
</ol>
<o:p></o:p><br />
<div class="MsoNormal">
Note: Remember in python3 when you perform integer division
it produces a floating-point result.</div>
<div class="MsoNormal">
<o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
Now lastly let’s see how to write paragraphs, Interactive
python is good for experimenting programs of 3 to 4 lines, but most programs
are much longer than that, so we type our python scripts in a file using an
editor and then we tell python to run those commands that we have coded in the
file. As a convention we add .py extension for python files. <o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<b>Sequential flow of execution</b> is followed by python
interpreter unless it comes across some branching, looping or conditional
statement. This means to say that when a program is running, that the flow of
execution occurs from one step to the next. As programmers we set paths for the
program to follow.<o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiF_ENyI8hwXYX60oqY_aeYcBvrND5VJXOJn4sHv9ElnSCWwdLq0hoxqbZnUlh0ih6edFrKVxY7O_Dl03ulZeg7p8fk6NsXmkh2Uzhu5XN_gRIF_8WAQTpjtIRIwL2ZXQECxx9pDcbIZQ4/s1600/type.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em; text-align: center;"><img border="0" data-original-height="320" data-original-width="400" height="256" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiF_ENyI8hwXYX60oqY_aeYcBvrND5VJXOJn4sHv9ElnSCWwdLq0hoxqbZnUlh0ih6edFrKVxY7O_Dl03ulZeg7p8fk6NsXmkh2Uzhu5XN_gRIF_8WAQTpjtIRIwL2ZXQECxx9pDcbIZQ4/s320/type.jpg" width="320" /></a>In python the variables are not declared by the programmer
and the python interpreter resolves this during the interpretation time of the
program and hence the language is dynamic. Python knows what type everything
is, but some operators are prohibited as in you cannot add a numeric 1 to a
string. We can ask python what type some named space is by using the built-in
function, type().<o:p></o:p></div>
<div class="MsoNormal">
</div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
There are certain scenario when the programmer would
explicitly like to typecast a named space and to do so there are some built-in
functions available to us, such as:<o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<div style="text-align: right;">
</div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXhSs8QKi33-XLraXLvR6I1gN6NN3mby9zFdWIarL44AdPL0A_nDKssFdkz-6OZPcHNjeKOg5yk8mgGUrl4gopGUMaE9iIHHOssP_hw2Ub72EeP37aGEzBVd6eZU7peGZu8gbwibZW7P0/s1600/typecasting.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" data-original-height="261" data-original-width="596" height="175" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhXhSs8QKi33-XLraXLvR6I1gN6NN3mby9zFdWIarL44AdPL0A_nDKssFdkz-6OZPcHNjeKOg5yk8mgGUrl4gopGUMaE9iIHHOssP_hw2Ub72EeP37aGEzBVd6eZU7peGZu8gbwibZW7P0/s400/typecasting.jpg" width="400" /></a></div>
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkQnxEAjoK1MwBJAmFdCYunpmQwec5PSHobjUE4Qzf0HiQspOyta_FCEM9i8tLlwXK_NLIMtBEEYFLCDWGSVmzUinEVlNyPLz351m1dFs51ityVefMf1djL6D-L2o3wpncpzfrjZMj26E/s1600/input.jpg" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em; text-align: center;"><img border="0" data-original-height="104" data-original-width="380" height="87" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkQnxEAjoK1MwBJAmFdCYunpmQwec5PSHobjUE4Qzf0HiQspOyta_FCEM9i8tLlwXK_NLIMtBEEYFLCDWGSVmzUinEVlNyPLz351m1dFs51ityVefMf1djL6D-L2o3wpncpzfrjZMj26E/s320/input.jpg" width="320" /></a>For python script to be interactive it must take input from
the user and it does that by invoking a function, input() which takes a string
argument and returns a string object containing the value entered by the user.
The same operation is done by function raw_input() in python2.<o:p></o:p></div>
<div class="MsoNormal">
</div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
Let’s say we want to read a number from the user then we
must convert the string object to integer or float using the typecasting
function which we have seen earlier.<o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmcPeQNxXihiQYDvcWURGCi__YRwEidGC5b6u0YWDJoiOM5FbtBwADuUx7Gas3lVcxU3SepJ85VrNXhlvz-hAe7elQIyikwJz9w2QgmuAj7JUmn1fcV9pJ1OBurHFDus6_Ks_JfrLWkoI/s1600/input_convert.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="250" data-original-width="314" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgmcPeQNxXihiQYDvcWURGCi__YRwEidGC5b6u0YWDJoiOM5FbtBwADuUx7Gas3lVcxU3SepJ85VrNXhlvz-hAe7elQIyikwJz9w2QgmuAj7JUmn1fcV9pJ1OBurHFDus6_Ks_JfrLWkoI/s1600/input_convert.jpg" /></a></div>
<br /></div>
<div class="MsoNormal">
<b>Comments </b>in python are prefixed by the ‘#’ symbol, when the
interpreter comes across a line prefixed with ‘#’ then it doesn’t execute it or
ignores it as comment. As a beginner in programming you might think why do we
need to write comments in a program, the reasons are,<o:p></o:p></div>
<div class="MsoNormal">
<span lang="EN-US"> -  Describe
what is going to happen in a sequence of code</span><o:p></o:p></div>
<div class="MsoNormal">
<span lang="EN-US"> - 
Document who wrote the code or other ancillary information</span><o:p></o:p></div>
<div class="MsoNormal">
<span lang="EN-US"> -  Turn
off a line of code - perhaps temporarily</span><o:p></o:p></div>
<div class="MsoNormal">
<br /></div>
<div class="MsoNormal">
So now we have come to the end of introduction in python,
and at this checkpoint we have pictured the edges of a big canvas about python
and we will focus on the details of this canvas in the next post. Stay tuned
for the next post on the topic of conditional statements and iterations, until
then guys enjoy your time browsing through other posts in the blog!!<br />
<br />
<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<br /></div>
<br />
<div class="separator" style="clear: both; text-align: center;">
<br /></div>
<br />
<div class="separator" style="clear: both; text-align: center;">
<br /></div>
<o:p></o:p></div>
</div>

Tutorials Learn Python from Scratch - Introduction

Python is the language of the Python Interpreter and those who can converse with it. An individual who can speak Python is known as a Pyth...

Example Code to Connect to mySQL Database in Java

May 26, 2017 Unknown 0

<div dir="ltr" style="text-align: left;" trbidi="on">
<div>
<div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 12.0pt;">This post
is to help initiate a MySQL database connection through Java at front-end via
JDBC (Java Data Base Connectivity). </span><br />
<span style="font-family: "times new roman" , serif; font-size: 12.0pt;"><br /></span>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgcdb5kBXyO2D5bLHdtDIRA0xxmNo60JUuAnMpic5fY5H6Op38AUnElzeouvz9Gob6VxuHvfGGneOkM-bJihe1liSGqdPGc9EHrInST1Ua6IXupnollmmzvcnEEEQCW95iEvYghp0Sx8Eg/s1600/jdbc-tutorial.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="322" data-original-width="563" height="364" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgcdb5kBXyO2D5bLHdtDIRA0xxmNo60JUuAnMpic5fY5H6Op38AUnElzeouvz9Gob6VxuHvfGGneOkM-bJihe1liSGqdPGc9EHrInST1Ua6IXupnollmmzvcnEEEQCW95iEvYghp0Sx8Eg/s640/jdbc-tutorial.png" width="640" /></a></div>
<span style="font-family: "times new roman" , serif; font-size: 12.0pt;"><br /></span>
<span style="font-family: "times new roman" , serif; font-size: 12.0pt;"><br /></span>
<span style="font-family: "times new roman" , serif; font-size: 12.0pt;">Before this we need to know some basic
information which are as follows:<o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm; margin-left: 72.0pt; margin-right: 0cm; margin-top: 0cm; mso-list: l0 level1 lfo1; tab-stops: list 36.0pt; text-indent: -18.0pt;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">1.<span style="font-family: "times new roman"; font-size: 7pt; font-stretch: normal; line-height: normal;">     
</span></span><b><span style="font-family: "times new roman" , serif; font-size: 16pt;">Driver class:</span></b><span style="font-family: "times new roman" , serif; font-size: 13pt;"> The driver class for the MySQL
database is <b>'com.mysql.jdbc.Driver'</b>. <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm; margin-left: 72.0pt; margin-right: 0cm; margin-top: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm; margin-left: 72.0pt; margin-right: 0cm; margin-top: 0cm; mso-list: l0 level1 lfo1; tab-stops: list 36.0pt; text-indent: -18.0pt;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">2.<span style="font-family: "times new roman"; font-size: 7pt; font-stretch: normal; line-height: normal;">     
</span></span><b><span style="font-family: "times new roman" , serif; font-size: 16pt;">Connection URL:</span></b><span style="font-family: "times new roman" , serif; font-size: 13pt;"> The connection URL for the MySQL
database is <b>'jdbc:mysql://localhost:3306/DB_sample'</b> where jdbc
is the API, MySQL is the database, localhost is the server name on which MySQL
is running, we may also use IP address, 3306 is the port number and <b>DB_sample</b> is
the database name. We may use any database, in such case, you need to replace
the <b>DB_sample</b> with your database name.<o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm; margin-left: 72.0pt; margin-right: 0cm; margin-top: 0cm; mso-list: l0 level1 lfo1; tab-stops: list 36.0pt; text-indent: -18.0pt;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">3.<span style="font-family: "times new roman"; font-size: 7pt; font-stretch: normal; line-height: normal;">     
</span></span><b><span style="font-family: "times new roman" , serif; font-size: 16pt;">Username:</span></b><span style="font-family: "times new roman" , serif; font-size: 13pt;"> The default username for the
MySQL database is <b>root</b>.<o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm; margin-left: 72.0pt; margin-right: 0cm; margin-top: 0cm; mso-list: l0 level1 lfo1; tab-stops: list 36.0pt; text-indent: -18.0pt;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">4.<span style="font-family: "times new roman"; font-size: 7pt; font-stretch: normal; line-height: normal;">     
</span></span><b><span style="font-family: "times new roman" , serif; font-size: 16pt;">Password:</span></b><span style="font-family: "times new roman" , serif; font-size: 13pt;"> Password is given by the user at
the time of installing the MySQL database. In this example, we are going to use <b>pswd</b> as
the password.<o:p></o:p></span></div>
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<br /></div>
<div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 12pt;">You must initially have a database created in the name DB_sample, which
can be created in a similar fashion as rendered below,<o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="border: 1pt none; font-family: "times new roman" , serif; font-size: 14pt; padding: 0cm;">create
database DB_sample; </span><span style="font-family: "times new roman" , serif; font-size: 14pt;"><o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="border: 1pt none; font-family: "times new roman" , serif; font-size: 14pt; padding: 0cm;">use
DB_sample; </span><span style="font-family: "times new roman" , serif; font-size: 14pt;"><o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="border: 1pt none; font-family: "times new roman" , serif; font-size: 14pt; padding: 0cm;">create
table employee(empid int(10), emp_name varchar(40), salary int(3)); </span><span style="font-family: "times new roman" , serif; font-size: 14pt;"><o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="border: 1pt none; font-family: "times new roman" , serif; font-size: 12pt; padding: 0cm;">Now
for the Java code to connect to this MySQL database is rendered below, (in this
example code as mentioned earlier DB_sample as database name, root as username
and pswd as password):</span><span style="font-family: "times new roman" , serif; font-size: 12pt;"><o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">import java.sql.*; <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">class ClsSqlCon{ <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">    public static void main(String args[]){ <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">        try{ <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">           
Class.forName("com.mysql.jdbc.Driver"); <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">            Connection con =
DriverManager.getConnection( <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">                   
                   
 "jdbc:mysql://localhost:3306/DB_sample","root","pswd"); <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">            //here DB_sample is database
name, root is username and pswd is password <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">            Statement stmt =
con.createStatement(); <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">            ResultSet
rs=stmt.executeQuery("select * from employee"); <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">            //Fetching records of employee
record<o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">            while(rs.next()) <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">               
System.out.println(rs.getInt(1)+" 
"+rs.getString(2)+"  "+rs.getString(3)); <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">            con.close(); <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">        }catch(Exception e){
System.out.println(e);} <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">    } <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="font-family: "times new roman" , serif; font-size: 13pt;">}  <o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<span style="border: 1pt none; font-family: "times new roman" , serif; font-size: 12pt; padding: 0cm;">Using
the above code you can retrieve all records of the employee table. Hope this
helpful and you were successful in your trial to connect to the MySQL database.
 </span><span style="font-family: "times new roman" , serif; font-size: 12pt;"><o:p></o:p></span></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: 18.0pt; margin-bottom: .0001pt; margin-bottom: 0cm;">
<br /></div>
<div class="MsoNormal" style="line-height: normal; margin-bottom: .0001pt; margin-bottom: 0cm;">
</div>
<div class="MsoNormal">
<br /></div>
</div>
<div>
<div>
<o:p></o:p><br />
<div class="MsoNormal">
<o:p></o:p></div>
<div class="MsoNormal">
<o:p></o:p></div>
<div class="MsoNormal">
<o:p></o:p></div>
</div>
</div>
</div>

Tips Example Code to Connect to mySQL Database in Java

This post is to help initiate a MySQL database connection through Java at front-end via JDBC (Java Data Base Connectivity). Before...

Smartwatch can help detect Life-Threatening Heart Problems

May 23, 2017 Unknown 0

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Fitness wearables typically monitors the wearer’s exercise pattern
and activities. Cardiogram announced recently that they have developed an
algorithm that trained a deep neural network using heart rate readings taken
from Apple Watch, iBeat and Android Wearables to help reduce fatalities caused
by heart diseases by detecting atrial fibrillation with higher accuracy than
previous models.</h3>
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<span style="font-family: inherit;"><span style="font-size: 12pt;">Atrial Fibrillation
or AF causes 15% of strokes in cases world-wide. AF is an abnormal heart rhythm
characterized by rapid and irregular beating (arrhythmia) that can lead to
blood clots, stroke, heart failure and other heart-related complications. Normally,
your heart contracts and relaxes to a regular beat. In atrial fibrillation, the
upper chambers of the heart (the atria) beat irregularly (quiver) instead of
beating effectively to move blood into the ventricles. </span><span style="font-size: 12pt;"> </span><span style="font-size: 12pt;">If a clot breaks off, enters the bloodstream
and lodges in an artery leading to the brain, a stroke results. About 15–20
percent of people who have strokes have this heart arrhythmia. This clot risk
is why patients with this condition are put on blood thinners.</span></span></div>
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<span style="font-size: 12.0pt; line-height: 107%;">Here’s how
patients have described their experience:<o:p></o:p></span></div>
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<span style="font-size: 14.0pt; line-height: 107%;">“My heart
flip-flops, skips beats, and feels like it’s banging against my chest wall,
especially if I’m carrying stuff up my stairs or bending down.”</span></div>
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<span style="font-size: 14.0pt; line-height: 107%;">“I was
nauseated, light-headed, and weak. I had a really fast heartbeat and felt like
I was gasping for air.”</span></div>
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<span style="font-size: 14.0pt; line-height: 107%;">“I had no
symptoms at all. I discovered my AF at a regular check-up. I’m glad we found it
early.”</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9uGS5VnehZw-RcrvZ28RP_BLJ-5xfmvtYu5_k2Fofu7nIGcCPHVQLUBKq3FN69zmfoR1VwlMOAsVjqIjb_D1zrpUm-09y4TnHBwxnJp8-0_J0mLuV40Q4rJp2RUGR4_3cZrtYr5RMPS0/s1600/img2a.png" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em; text-align: center;"><img border="0" data-original-height="274" data-original-width="600" height="291" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh9uGS5VnehZw-RcrvZ28RP_BLJ-5xfmvtYu5_k2Fofu7nIGcCPHVQLUBKq3FN69zmfoR1VwlMOAsVjqIjb_D1zrpUm-09y4TnHBwxnJp8-0_J0mLuV40Q4rJp2RUGR4_3cZrtYr5RMPS0/s640/img2a.png" width="640" /></a><br />
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The company sent 200 AliveCor mobile electrocardiogram
devices to people diagnosed by this condition and this led to recording of
6,338 mobile ECGs from the test patients. Cardiogram has applied 139 million
heart rate readings. To validate their architectural model, Cardiogram obtained
gold standards from cardioversions and has been working with medical
researchers from UCSF’s Health eHeart Study, and a total of 51 human trials
were done wearing the Apple Watch and was able to detect AF with 98.04% sensitivity
and 90.2% specificity.<o:p></o:p></span></div>
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<span style="font-size: 12pt; text-align: justify;"><br /></span>
<span style="font-size: 12pt; text-align: justify;">The iBeat
smartwatch uses microsensors to measure heart rate for ir</span><span style="font-size: 12pt; text-align: justify;">regularities. The device
is integrated with a built-in radio, microphone and GPS.  The watch reading shows a user experiencing
AF. The iBeat is available for pre-order on iBeat.com. It costs $150 and an
additional $17 per month for the monitoring service.</span><br />
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<span style="font-size: 12pt;">Cardiogram
said that they would eventually roll out wearables to pair early warning with
prompts to set up appointments for the treatment.</span></div>
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<span style="font-size: 12pt;">When a
cardiac incident is detected, the iBeat vibrates to alert the user, prompting
him or her to touch the screen indicating whether everything is OK. If he or
she responds with “no” or does not reply within 10 seconds, their linked
emergency contacts and iBeat’s 24/7 heart dispatch team receive a text, email
or phone notification with the user’s location and the type of emergency. The
device is cellular enabled, has built-in GPS and features a help on-demand
button.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhALlvbILBw71WtQ_lBm4M4NygOWXIJfnILZQYOh3H7yGK9_dYijQ-AQSS2AyvOxcagyOsMxvNNFjEErfI0KVULgbUeQ0k-yqKFFtFhO5mdLcutJlqwneLc33McXWsjpOGOgoTpr6G6H_k/s1600/img2c.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="274" data-original-width="600" height="292" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhALlvbILBw71WtQ_lBm4M4NygOWXIJfnILZQYOh3H7yGK9_dYijQ-AQSS2AyvOxcagyOsMxvNNFjEErfI0KVULgbUeQ0k-yqKFFtFhO5mdLcutJlqwneLc33McXWsjpOGOgoTpr6G6H_k/s640/img2c.png" width="640" /></a></div>
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<span style="font-size: 18.6667px;">“There are many devices on the market including diabetic monitors, heart-rate </span><span style="font-size: 18.6667px;">monitors, and other health monitoring solutions, but all these devices only passively monitor you,” Ryan Howard, founder and CEO of iBeat, said in a news release. “None of them actively monitor and analyze your heart health around-the-clock like the iBeat Life Monitor.”</span></div>
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<span style="font-size: 14pt; text-align: left;">“If you
suffer a life-threatening heart incident such as sudden cardiac arrest, you
have a 90 percent chance of dying without intervention,” Howard said in the
release. “Continual monitoring and quick intervention can mean the difference
between life and death in emergency situations.”</span></div>
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News Smartwatch can help detect Life-Threatening Heart Problems

Fitness wearables typically monitors the wearer’s exercise pattern and activities. Cardiogram announced recently that they have developed ...

Introduction To Machine Learning:

May 23, 2017 Unknown 3

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<span style="font-size: 12.0pt; line-height: 107%;">Machine learning is the sub-field of computer science,
focuses on the development of computer programs that can change when exposed to
new data. Machine learning system searches through data for a pattern and
adjust program actions accordingly.<o:p></o:p></span></div>
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<b style="text-align: justify;"><b><span style="font-size: 14.0pt; line-height: 107%;"><br /></span></b></b></div>
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<span style="font-size: 12.0pt; line-height: 107%;">Facebook's News Feed uses machine learning to personalize each
member's feed. If a member frequently stops scrolling in order to read or
"like" a particular friend's posts, the News Feed will start to show
more of that friend's activity earlier in the feed. Behind the scenes, the
software is simply using statistical analysis and predictive analytics to
identify patterns in the user's data and use to patterns to populate the News
Feed. Should the member no longer stop to read, like or comment on the friend's
posts, that new data will be included in the data set and the News Feed will
adjust accordingly.<o:p></o:p></span></div>
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<b style="text-align: justify;"><b><span style="font-size: 14.0pt; line-height: 107%;">Machine learning is a
method of:</span></b></b></div>
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<span style="font-family: "symbol"; font-size: 14pt; line-height: 107%; text-align: justify; text-indent: -18pt;">       ·<span style="font-family: "times new roman"; font-size: 7pt; font-stretch: normal; line-height: normal;">    </span></span><span style="font-size: 14pt; line-height: 107%; text-align: justify; text-indent: -18pt;">data
analysis that automates analytical model building.</span></div>
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<span style="font-family: "symbol"; font-size: 14pt; line-height: 107%; text-align: justify; text-indent: -18pt;">       ·<span style="font-family: "times new roman"; font-size: 7pt; font-stretch: normal; line-height: normal;">   </span></span><span style="font-size: 14pt; line-height: 107%; text-align: justify; text-indent: -18pt;">Using
algorithms that iteratively learn from data,</span></div>
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<span style="font-family: "symbol"; font-size: 14pt; line-height: 107%; text-align: justify; text-indent: -18pt;">       ·<span style="font-family: "times new roman"; font-size: 7pt; font-stretch: normal; line-height: normal;">   </span></span><span style="font-size: 14pt; line-height: 107%; text-align: justify; text-indent: -18pt;">find
hidden insights without being explicitly programmed where to look. </span></div>
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<br /></div>
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<b><i><span style="font-size: 14.0pt; line-height: 107%;">Traditional Programming:</span></i></b><i><span style="font-size: 14.0pt; line-height: 107%;"> </span></i><span style="font-size: 14pt; line-height: 107%;">Data and program is run on the
computer to produce the output. <b><i>Machine Learning:</i></b> Data and output is
run on the computer to create a program. This program can be used in
traditional programming.</span></div>
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<b><span style="font-size: 14.0pt; line-height: 107%;">Applications of Machine
Learning:</span></b><span style="font-size: 7pt; font-stretch: normal; font-variant-numeric: normal; line-height: normal;">        </span><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh4iFxGAiT0AkUp2WefDkJgHWVvEzc3o323IDxFMRGTXfG-ih7I9VZuGcl9mqbiJ3adtE2xatrKpVtirQz-YRLx-lPVrSonYOS52y9H0f32sB0qt36iX1dOGajhWV0xcwKSJr0A6oUywWc/s1600/appl.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em; text-indent: -18pt;"><img border="0" height="416" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh4iFxGAiT0AkUp2WefDkJgHWVvEzc3o323IDxFMRGTXfG-ih7I9VZuGcl9mqbiJ3adtE2xatrKpVtirQz-YRLx-lPVrSonYOS52y9H0f32sB0qt36iX1dOGajhWV0xcwKSJr0A6oUywWc/s640/appl.PNG" width="640" /></a></h3>
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<li><b style="text-indent: -18pt;"><span style="font-size: 14.0pt; line-height: 107%;">Web search</span></b><span style="font-size: 14pt; line-height: 107%; text-indent: -18pt;">: ranking page based on what you are
most likely to click on.</span></li>
<li><b style="text-indent: -18pt;"><span style="font-size: 14.0pt; line-height: 107%;">Computational biology</span></b><span style="font-size: 14pt; line-height: 107%; text-indent: -18pt;">: rational design drugs in the
computer based on past experiments.</span></li>
<li><b style="text-indent: -18pt;"><span style="font-size: 14.0pt; line-height: 107%;">Finance:</span></b><span style="font-size: 14pt; line-height: 107%; text-indent: -18pt;"> decide who to send what credit card
offers to. Evaluation of risk on credit offers. How to decide where to invest
money.</span></li>
<li><b style="text-indent: -18pt;"><span style="font-size: 14.0pt; line-height: 107%;">E-commerce:</span></b><span style="font-size: 14pt; line-height: 107%; text-indent: -18pt;">  Predicting customer churn.
Whether a transaction is fraudulent.</span></li>
<li><b style="text-indent: -18pt;"><span style="font-size: 14.0pt; line-height: 107%;">Space exploration:</span></b><span style="font-size: 14pt; line-height: 107%; text-indent: -18pt;"> space probes and radio astronomy</span></li>
<li><b style="text-indent: -18pt;"><span style="font-size: 14.0pt; line-height: 107%;">Robotics:</span></b><span style="font-size: 14pt; line-height: 107%; text-indent: -18pt;"> how to handle uncertainty in new
environments. Autonomous. Self-driving car.</span></li>
<li><b style="text-indent: -18pt;"><span style="font-size: 14.0pt; line-height: 107%;">Information extraction</span></b><span style="font-size: 14pt; line-height: 107%; text-indent: -18pt;">: Ask questions over DB across the
web.</span></li>
<li><b style="text-indent: -18pt;"><span style="font-size: 14.0pt; line-height: 107%;">Social networks:</span></b><span style="font-size: 14pt; line-height: 107%; text-indent: -18pt;"> Data on relationships and
preferences. Machine learning to extract value from data.</span></li>
<li><b style="text-indent: -18pt;"><span style="font-size: 14.0pt; line-height: 107%;">Debugging:</span></b><span style="font-size: 14pt; line-height: 107%; text-indent: -18pt;"> Use in computer science problems
like debugging. Labour intensive process. Could suggest where the bug could be.</span></li>
</ul>
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<b><span style="font-size: 14.0pt; line-height: 107%;">Machine Language</span></b><span style="font-size: 14.0pt; line-height: 107%;"> is a computer program that learns
from <b>Experience</b> (E) with respect to
some class of <b>Task</b> (T) and <b>Performance measure</b> (P). If its
performance with task T as measured by P improves with E.<o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgiI7j9IKJBVjqPYuZ3JQDhpi_sUw_4AAb7LM84avW4td8OTjeI1QWY-HvTaf5PGiQXefuH5bFTK87HAg8RicMKuTCtWrIDcWUm1ZCtmB4SgGqOxv00S073Avp677T17ANE78L3GzvSeQQ/s1600/ML-ETP.png" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="174" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgiI7j9IKJBVjqPYuZ3JQDhpi_sUw_4AAb7LM84avW4td8OTjeI1QWY-HvTaf5PGiQXefuH5bFTK87HAg8RicMKuTCtWrIDcWUm1ZCtmB4SgGqOxv00S073Avp677T17ANE78L3GzvSeQQ/s320/ML-ETP.png" width="320" /></a><b><span style="font-size: 14.0pt; line-height: 107%;"><br /></span></b></div>
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<b><span style="font-size: 14.0pt; line-height: 107%;">Example: playing
checkers<o:p></o:p></span></b></div>
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<span style="font-size: 14.0pt; line-height: 107%;">E —> experience of playing many games of checkers.<o:p></o:p></span></div>
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<span style="font-size: 14.0pt; line-height: 107%;">T —> Task of playing checkers.<o:p></o:p></span></div>
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<span style="font-size: 14.0pt; line-height: 107%;">P —> Probability program will win next game.<o:p></o:p></span></div>
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<b><span style="font-size: 18.0pt; line-height: 107%;">History Of Machine
Learning:<o:p></o:p></span></b></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjX0gq8IeBAKHOyRElJNosOl6D4uJRnrpqm2hZX0J7L_IHOpFTIqJWybrXBGPzBbHH1OjV34OIAoW87FD_VMydBMGDk0XlKaDst9nrXNop8iRY4o8uq_zleQHEpK2DT0TU5DsRgtu2zfPY/s1600/history1.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="298" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjX0gq8IeBAKHOyRElJNosOl6D4uJRnrpqm2hZX0J7L_IHOpFTIqJWybrXBGPzBbHH1OjV34OIAoW87FD_VMydBMGDk0XlKaDst9nrXNop8iRY4o8uq_zleQHEpK2DT0TU5DsRgtu2zfPY/s640/history1.PNG" width="640" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhA6CuZcJjv3D4dMQTLENC6ip3fbZs98YiuhAUQQgqap3bxFHYJbVZ2RM637QqpznTpzjw88AdOQWYjQhFhxVAlo97gNCiLpXtZ2VwQnaEt58MZ6fgD3G_U-fOyykC8sAaGS5qAnHB_sOA/s1600/history2.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhA6CuZcJjv3D4dMQTLENC6ip3fbZs98YiuhAUQQgqap3bxFHYJbVZ2RM637QqpznTpzjw88AdOQWYjQhFhxVAlo97gNCiLpXtZ2VwQnaEt58MZ6fgD3G_U-fOyykC8sAaGS5qAnHB_sOA/s640/history2.PNG" width="640" /></a></div>
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<b><span style="font-size: 18.0pt; line-height: 107%;">What are the
differences between data mining, machine learning and deep learning?<o:p></o:p></span></b></div>
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<b><span style="font-size: 18.0pt; line-height: 107%;"><br /></span></b></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0R6wH7OJPJz9feMChvoHq-ITCgF-QUaC6NbP0OhtqOmCa7VtjB3vN2D9iUABjKKyFXLAs9r3-qGOy7yBn1F7XTxhQvU2u5IyZ4j1P1CPj8x0G24PC9AVS0sDeiSIjuBcUSVnyPT6y7c4/s1600/dif.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="294" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh0R6wH7OJPJz9feMChvoHq-ITCgF-QUaC6NbP0OhtqOmCa7VtjB3vN2D9iUABjKKyFXLAs9r3-qGOy7yBn1F7XTxhQvU2u5IyZ4j1P1CPj8x0G24PC9AVS0sDeiSIjuBcUSVnyPT6y7c4/s640/dif.PNG" width="640" /></a></div>
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<b><span style="font-size: 18.0pt; line-height: 107%;">Basic Workflow Model Of
Machine Learning:<o:p></o:p></span></b></div>
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<b><span style="font-size: 18.0pt; line-height: 107%;"><br /></span></b></div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgm-SOAF9dBfFkci953RPyuPP7VnN4rx1yqHov1u_9EndjU-EVlGiERcBQ3Jdx8yw1YEnBjEpthf-sFcnceBPCYgDmgymP3dicyi71BnR1nJ5a_pi3z2_3EUURyenFll8LR1pLM3SdyX8o/s1600/build.PNG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="140" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgm-SOAF9dBfFkci953RPyuPP7VnN4rx1yqHov1u_9EndjU-EVlGiERcBQ3Jdx8yw1YEnBjEpthf-sFcnceBPCYgDmgymP3dicyi71BnR1nJ5a_pi3z2_3EUURyenFll8LR1pLM3SdyX8o/s640/build.PNG" width="640" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZMkYZ1RgoWjyMnhAdSdrwNQ8_XBEf7W07YqyqnK8wqGriUOfKnwnkKIuq7C2M64VhkRjP8a1q5k-0qzkSyjNJzeMilb0ahg2aK1nWD3AnW8VNfCk4R6F_PxBnDQeyuMUfakPE53uSdNU/s1600/build1.PNG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="175" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZMkYZ1RgoWjyMnhAdSdrwNQ8_XBEf7W07YqyqnK8wqGriUOfKnwnkKIuq7C2M64VhkRjP8a1q5k-0qzkSyjNJzeMilb0ahg2aK1nWD3AnW8VNfCk4R6F_PxBnDQeyuMUfakPE53uSdNU/s400/build1.PNG" style="cursor: move;" width="400" /></a><span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">ML
has three phases – training, validation, and testing. To decide which is best model
of the alternatives, the selection should be based on the performance of the
model against validation data and not on the accuracy on test data set. The
following steps are performed: <o:p></o:p></span></div>
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<span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;"><br /></span></div>
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<span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">   1.<span style="font-size: 7pt; font-stretch: normal; font-variant-numeric: normal; line-height: normal;">    
</span></span><span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">Identify the
features from training data<o:p></o:p></span></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l0 level1 lfo1; text-align: justify; text-indent: -18.0pt;">
<span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">   2.<span style="font-size: 7pt; font-stretch: normal; font-variant-numeric: normal; line-height: normal;">    
</span></span><span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">Identify subset
of attributes necessary for classification (dimensional reduction).<o:p></o:p></span></div>
<div class="MsoListParagraphCxSpMiddle" style="mso-list: l0 level1 lfo1; text-align: justify; text-indent: -18.0pt;">
<span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">   3.<span style="font-size: 7pt; font-stretch: normal; font-variant-numeric: normal; line-height: normal;">    
</span></span><span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">Learn model using
training data<o:p></o:p></span></div>
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</div>
<div class="MsoListParagraphCxSpLast" style="mso-list: l0 level1 lfo1; text-align: justify; text-indent: -18.0pt;">
<span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">   4.<span style="font-size: 7pt; font-stretch: normal; font-variant-numeric: normal; line-height: normal;">    
</span></span><span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;">Use trained model
to classify unknown data, and predict the result accurately.<o:p></o:p></span></div>
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<br /></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgAaKNgIlOnafxu4w3ZtNsWjbFhWq2ivnGxI1FqZJ3Qnua8XsTHBv1mM5HxXwcn_-1ZfTkKad0f5i6M9YmbDle-LAVpZfHomlJYeIV7GXmEBpj7EsWZUe1LchfCu_ScSOt_IgeT14fJ6y4/s1600/chart.PNG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="231" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgAaKNgIlOnafxu4w3ZtNsWjbFhWq2ivnGxI1FqZJ3Qnua8XsTHBv1mM5HxXwcn_-1ZfTkKad0f5i6M9YmbDle-LAVpZfHomlJYeIV7GXmEBpj7EsWZUe1LchfCu_ScSOt_IgeT14fJ6y4/s400/chart.PNG" width="400" /></a><span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;"></span></div>
<div style="text-align: left;">
<span style="font-size: 14pt; line-height: 107%;">What
is required is, the machine learning (ML) system to train on dataset and act on
data which fits a particular pattern find alternate models and select the best
fit model. </span></div>
<div style="text-align: left;">
<span style="font-size: 14pt; line-height: 107%;"><br /></span></div>
<div style="text-align: left;">
<b><span style="font-size: 14.0pt; line-height: 107%;">Undercutting</span></b><span style="font-size: 14pt; line-height: 107%;"> is result of excessively simple
model. </span></div>
<div style="text-align: left;">
<b style="font-size: 14pt;">Overfitting</b><span style="font-size: 14pt;"> is result of
excessively complicated model.</span></div>
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<span style="font-size: 14.0pt; line-height: 107%; mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin;"><br /></span></div>
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This is first issue of this machine learning tutorial that has been published. In the next issue Machine Learning Algorithms will be discussed. Hope you have a good exposure on what is machine learning in this issue. stay</div>
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Tutorials Introduction To Machine Learning:

Machine learning is the sub-field of computer science, focuses on the development of computer programs that can change when exposed to ...

SELF-DESTRUCT THE REGRETTABLE MAIL YOU SENT THROUGH GMAIL VIA D-MAIL !!

May 23, 2017 Unknown 0

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<span style="color: #7f7f7f; mso-style-textfill-fill-alpha: 100.0%; mso-style-textfill-fill-color: #7F7F7F; mso-style-textfill-fill-colortransforms: lumm=50000; mso-style-textfill-fill-themecolor: background1; mso-themecolor: background1; mso-themeshade: 128;"><span style="font-family: "georgia" , "times new roman" , serif; font-size: large;">Chrome Web Extension that allows you to revoke access to sent
emails whenever you like!!</span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiA4kM3JStnER6Sj4sigJ93KVnnkujJY8Prf9-rVsnNScp55eIZjXtzeAOwTWjmNLEO6U4-pQg8BmQgqmr6KxTYydhDk4wTFe3fR3uhwvverQdA-UjCVPCAJezHmgq_CvbBbVs5kKDzRUE/s1600/img6.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="388" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiA4kM3JStnER6Sj4sigJ93KVnnkujJY8Prf9-rVsnNScp55eIZjXtzeAOwTWjmNLEO6U4-pQg8BmQgqmr6KxTYydhDk4wTFe3fR3uhwvverQdA-UjCVPCAJezHmgq_CvbBbVs5kKDzRUE/s640/img6.jpg" width="640" /></a></div>
<span style="color: #7f7f7f; mso-style-textfill-fill-alpha: 100.0%; mso-style-textfill-fill-color: #7F7F7F; mso-style-textfill-fill-colortransforms: lumm=50000; mso-style-textfill-fill-themecolor: background1; mso-themecolor: background1; mso-themeshade: 128;"><span style="font-family: "georgia" , "times new roman" , serif; font-size: large;"><br /></span></span></div>
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<span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;">You may have encountered this situation many times that you
have regretted sending an email hastily and desperately wished you could take
it back? Or maybe you’re worried about sending confidential information over
email – especially after witnessing many large-scale hacks and the damage they
can cause.<o:p></o:p></span></div>
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<span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;"><br /></span></div>
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<span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;">A new self-destructing email service called Dmail aims to eliminate
these concerns with this tool that allows user to manage the mails sent over Gmail.
Dmail is a new Google Chrome Browser Extension that gives people power to how
long the recipient can view the mail sent by you. You can even set a
self-destructing timer that automatically makes an email inaccessible after that
certain time.<o:p></o:p></span><br />
<span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;"><br /></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjejw4hBCIYoIecNcWPy-Bif8ClkhwYLtSaFLpF5fnpXyOTuprMSKfX6axf2z6Q-u9WQj4P8_PSNBet4zo9Ejv9tk62PlJzFOoUq3PKWyF0OKap2MSzHUd_tDkhD3PvOFlnIPcOuTnM3hQ/s1600/img3.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="142" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjejw4hBCIYoIecNcWPy-Bif8ClkhwYLtSaFLpF5fnpXyOTuprMSKfX6axf2z6Q-u9WQj4P8_PSNBet4zo9Ejv9tk62PlJzFOoUq3PKWyF0OKap2MSzHUd_tDkhD3PvOFlnIPcOuTnM3hQ/s400/img3.jpg" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx66ixVNNfem2E_-mCmNP2SjP5GhIM_ose89pUxxWwKHglCskQRsS4P5G2TW4eInESqmF9vFs16oQMPw_BPF6YDlR5lDFVbpt9m50KSKieJiYB2JxorObrXGXeN41OGtNlBMr0GsYYAxg/s1600/img7.PNG" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="134" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx66ixVNNfem2E_-mCmNP2SjP5GhIM_ose89pUxxWwKHglCskQRsS4P5G2TW4eInESqmF9vFs16oQMPw_BPF6YDlR5lDFVbpt9m50KSKieJiYB2JxorObrXGXeN41OGtNlBMr0GsYYAxg/s320/img7.PNG" width="320" /></a><span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;">The product was developed by the people who made the social
bookmarking service Delicious. The most valuable thing about Dmail is that it
works even if the recipient hasn’t installed this specific tool on the system. This
is because the service doesn’t actually delete the mail from the user’s inbox
rather encrypts and decrypts on demand. <o:p></o:p></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjv3mhOuM7R0iS3K_t8xgTzWAmIQsFN6ybVmT7XYoDtdHeQL7OtLDcmMQxj7J5rwXx8heY12irNelB53edAlKtZ6h9UYWlr_1m0pbhKQsQrkCsNquUATWwRBFAuTLZZkaFPsdl5MpO9llI/s1600/img4.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="192" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjv3mhOuM7R0iS3K_t8xgTzWAmIQsFN6ybVmT7XYoDtdHeQL7OtLDcmMQxj7J5rwXx8heY12irNelB53edAlKtZ6h9UYWlr_1m0pbhKQsQrkCsNquUATWwRBFAuTLZZkaFPsdl5MpO9llI/s400/img4.png" width="400" /></a></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwRCuYneb9HUk1b34hPB7eZGpnUuODJBeYbGJFYogoZjL5O4pT0885T8veMrEfcPBSd7oLpy0-9KobqFoFfXGsfo0-Kj4gFp5T_w3bRCE1aoR_NGao5uzbQ60OeqKgxvUocTaA31VMfj8/s1600/img10.PNG" imageanchor="1" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="134" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiwRCuYneb9HUk1b34hPB7eZGpnUuODJBeYbGJFYogoZjL5O4pT0885T8veMrEfcPBSd7oLpy0-9KobqFoFfXGsfo0-Kj4gFp5T_w3bRCE1aoR_NGao5uzbQ60OeqKgxvUocTaA31VMfj8/s320/img10.PNG" width="320" /></a><span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;">If the Dmail received by the recipient doesn’t have the
extension installed, are shown a “View Message” button that opens the email in
new tab while extension installed users can see the message directly within Gmail.
Once a Dmail is initiated by the sender the recipients are informed of the same
by the message “This message has been destroyed and is no longer available.” <o:p></o:p></span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbybU08uFXTKpG5jt7lPvV5DQO43dnrcFm6xP2oZmbWTV8aBRoNqyfzrXhtZ8hoKhAqZGu0KKAdYD9qScMvNts5ZNWQWmaz23C9McERD_6B1jtYDfkw8nvOTfPhdb7OW5xl151ENAPDC4/s1600/img9.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="233" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgbybU08uFXTKpG5jt7lPvV5DQO43dnrcFm6xP2oZmbWTV8aBRoNqyfzrXhtZ8hoKhAqZGu0KKAdYD9qScMvNts5ZNWQWmaz23C9McERD_6B1jtYDfkw8nvOTfPhdb7OW5xl151ENAPDC4/s400/img9.png" width="400" /></a></div>
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<span style="font-family: georgia, "times new roman", serif;">Dmail’s developer had explained to TechCrunch that whenever
user sends a message with the service, it’s encrypted locally on their machine with
a standard 256-bit algorithm. The recipient of the mail is sent both the
location of data store and the key to view the decrypted form of the message. They
also have plans to make the Dmail a freemium service.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbJU1nAcv9UavJZmtoJbj_ZYy8NoxZ2GV86INxkPmxp2M-qZ9uVI1xz9CH3s4dvRDtQQhZHXKiNjvHSzKcHZmqD-_2lyrZ4-0bXo9HhbhYY6OmlUHLEAOp1zJ69kIXTO9CEJzKb9AKuA4/s1600/img5.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="221" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjbJU1nAcv9UavJZmtoJbj_ZYy8NoxZ2GV86INxkPmxp2M-qZ9uVI1xz9CH3s4dvRDtQQhZHXKiNjvHSzKcHZmqD-_2lyrZ4-0bXo9HhbhYY6OmlUHLEAOp1zJ69kIXTO9CEJzKb9AKuA4/s400/img5.jpg" width="400" /></a></div>
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<b><span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;">How Does Dmail Work,<o:p></o:p></span></b></div>
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<span style="font-family: georgia, "times new roman", serif;">       For
using Dmail you required to install Chrome extension for Dmail. After
installation of Chrome extension, open Gmail inside Chrome browser and you will
found that Dmail now integrated with Gmail, to send a new email with dmail
enabled you to have to encrypt the emails. Auto expire time can be set as 1
hour, 1 day or 1 week.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGMZuFzxh4AtiAHtLttNaLrM1jxGyy548u3gQMx6hYeaL0EdDSiDvSxIl0XSrScBNtOeQkGcyu7aOOkm0KwOHVf5wUKIYcAQ3ORLlWGZb-9Bav29HodPdz6Q7sHobhVtbwCOgiY3dx7ao/s1600/img8.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="177" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGMZuFzxh4AtiAHtLttNaLrM1jxGyy548u3gQMx6hYeaL0EdDSiDvSxIl0XSrScBNtOeQkGcyu7aOOkm0KwOHVf5wUKIYcAQ3ORLlWGZb-9Bav29HodPdz6Q7sHobhVtbwCOgiY3dx7ao/s400/img8.png" width="400" /></a></div>
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<span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;">Eventually the team want to upscale the use of the tool to
let users set self-destructing timers on other documents too.<o:p></o:p></span><br />
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZZ6hW_aeQ7g-77RopNI2067F8at6iVrtQOKU7rqIlpyS9dzE_jeES8yhiUeDPvWnQPNFxI-vJN2sbORTz8hx7BjThwIhMuDbLWDHDgnz5ReHEeS5CDvIjsNwm5MlxXvy1PKNP3DP8_cM/s1600/img1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="137" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjZZ6hW_aeQ7g-77RopNI2067F8at6iVrtQOKU7rqIlpyS9dzE_jeES8yhiUeDPvWnQPNFxI-vJN2sbORTz8hx7BjThwIhMuDbLWDHDgnz5ReHEeS5CDvIjsNwm5MlxXvy1PKNP3DP8_cM/s400/img1.jpg" width="400" /></a></div>
<span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;"><br /></span></div>
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<span style="font-family: "georgia" , "times new roman" , serif; font-size: medium;">Google itself seems to have an alarming understanding of the
value to revoke an email as well and recently made its Undo feature, which
allows the sender to revoke a mail up-to 30 seconds after its sent across
Gmail.</span><o:p></o:p></div>
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News Tips SELF-DESTRUCT THE REGRETTABLE MAIL YOU SENT THROUGH GMAIL VIA D-MAIL !!

Chrome Web Extension that allows you to revoke access to sent emails whenever you like!! You may have encountered this situation man...