Python for Beginners pdf free download, dummies, commands, examples, NumPy, SciPy, Data Science, Analytics, Data Engineers, BIG Data

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What are the differences between
Python 2.x vs Python 3.x
(2.7 vs 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9),
when to you which version ?

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What is Python Variable, Expression
and Statement ?

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What is a 'Reserved Word' in Python ?
List of Reserved words in Python ?

The final 2.x version is 2.7 released in the middle of 2010. Python 3.x latest version is 3.6.4 when writing this article. Python 3.3 released in 2012, 3.4 in 2014, 3.5 in 2015 and 3.6 in 2016.

The following are some of the key differences between Python 2.x and Python 3.x:

• strings are Unicode by default
• clean Unicode/bytes separation
• exception chaining
• function annotations
• syntax for keyword-only arguments
• extended tuple unpacking
• non-local variable declarations

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It is a place where we can store values. Instead of using the values directly, we can refer the variable name where the actual values are stored.

Example
> x = 2 === > here X is a Variable
> name = 'John' === > here NAME is variable

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It is a word with special meaning for Python. In other words, when used these special words, Python performs certain function (or) action. We can not use reserved words as Variable names.

Example
'and' ... 'or' === > reserved words, these are used for comparison needs in the program logic

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Reusable Define Function with Return

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Python 2D Lists and Nested Loops Examples

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Python exception handling using
try except with examples

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Python For Loop condition with examples

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Python while condition with examples

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Python if elif else logical condition

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Python Tuples vs List

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Python Translator with Examples

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Python List Functions with Examples

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Data Structures and Data Types

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Python Exponent Function with examples

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Python dictionary with examples

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Variables, Expressions & Statements

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List of 'Reserved Words' in Python

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Boolean Expressions &
Comparison Operators