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Title: GitHub - desk7/learn-python: 📖🐍 Free & Open Source book to master Python 3. Also available: PDF & Web Interface.

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X Title: GitHub - desk7/learn-python: 📖🐍 Free & Open Source book to master Python 3. Also available: PDF & Web Interface.

Description: 📖🐍 Free & Open Source book to master Python 3. Also available: PDF & Web Interface. - desk7/learn-python

Open Graph Description: 📖🐍 Free & Open Source book to master Python 3. Also available: PDF & Web Interface. - desk7/learn-python

X Description: 📖🐍 Free & Open Source book to master Python 3. Also available: PDF & Web Interface. - desk7/learn-python

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New Tuple with Sorted Items	https://patch-diff.githubusercontent.com/desk7/learn-python#new-tuple-with-sorted-items
Nested Tuple	https://patch-diff.githubusercontent.com/desk7/learn-python#nested-tuple
Understanding the Immutable Nature of Tuples	https://patch-diff.githubusercontent.com/desk7/learn-python#understanding-the-immutable-nature-of-tuples
Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#dictionary
What is a Dictionary?	https://patch-diff.githubusercontent.com/desk7/learn-python#what-is-a-dictionary
How to Create a Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#how-to-create-a-dictionary
Key: Value Pairs	https://patch-diff.githubusercontent.com/desk7/learn-python#key-value-pairs
Sequence of (key, value) Tuples	https://patch-diff.githubusercontent.com/desk7/learn-python#sequence-of-key-value-tuples
Keyword/Named Arguments	https://patch-diff.githubusercontent.com/desk7/learn-python#keywordnamed-arguments
Key and Value Lists	https://patch-diff.githubusercontent.com/desk7/learn-python#key-and-value-lists
Keys with Default Value	https://patch-diff.githubusercontent.com/desk7/learn-python#keys-with-default-value
Accessing Items (Key:Value) of a Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#accessing-items-keyvalue-of-a-dictionary
Updating a Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#updating-a-dictionary
Removing an Item (Key:Value) from a Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#removing-an-item-keyvalue-from-a-dictionary
Dictionary Operations	https://patch-diff.githubusercontent.com/desk7/learn-python#dictionary-operations
Traversing a Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#traversing-a-dictionary
Built-in Functions for a Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#built-in-functions-for-a-dictionary
Creating a Copy of a Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#creating-a-copy-of-a-dictionary
Nested Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#nested-dictionary
Sample Programs	https://patch-diff.githubusercontent.com/desk7/learn-python#sample-programs-1
Python Standard Library	https://patch-diff.githubusercontent.com/desk7/learn-python#python-standard-library
Built-in Functions	https://patch-diff.githubusercontent.com/desk7/learn-python#built-in-functions
Mathematical Functions	https://patch-diff.githubusercontent.com/desk7/learn-python#mathematical-functions
Type Functions	https://patch-diff.githubusercontent.com/desk7/learn-python#type-functions
Type Checking	https://patch-diff.githubusercontent.com/desk7/learn-python#type-checking-1
Built-in Type Functions	https://patch-diff.githubusercontent.com/desk7/learn-python#built-in-type-functions
I/O Functions	https://patch-diff.githubusercontent.com/desk7/learn-python#io-functions
Base/Unicode Conversion Functions	https://patch-diff.githubusercontent.com/desk7/learn-python#baseunicode-conversion-functions
What are Built-in Modules?	https://patch-diff.githubusercontent.com/desk7/learn-python#what-are-built-in-modules
math Module	https://patch-diff.githubusercontent.com/desk7/learn-python#math-module
Constants	https://patch-diff.githubusercontent.com/desk7/learn-python#constants
Functions	https://patch-diff.githubusercontent.com/desk7/learn-python#functions
random Module	https://patch-diff.githubusercontent.com/desk7/learn-python#random-module
statistics Module	https://patch-diff.githubusercontent.com/desk7/learn-python#statistics-module
File Handling	https://patch-diff.githubusercontent.com/desk7/learn-python#file-handling
File Handling in Python - Introduction & Overview	https://patch-diff.githubusercontent.com/desk7/learn-python#file-handling-in-python---introduction--overview
Text Files vs Binary Files - Use Case, File Formats, Examples	https://patch-diff.githubusercontent.com/desk7/learn-python#text-files-vs-binary-files---use-case-file-formats-examples
File Opening & Closing	https://patch-diff.githubusercontent.com/desk7/learn-python#file-opening--closing
File Reading	https://patch-diff.githubusercontent.com/desk7/learn-python#file-reading
Sequential Reading	https://patch-diff.githubusercontent.com/desk7/learn-python#sequential-reading
Ad-hoc Reading	https://patch-diff.githubusercontent.com/desk7/learn-python#ad-hoc-reading
Writing a File	https://patch-diff.githubusercontent.com/desk7/learn-python#writing-a-file
Reading & Writing Binary Files using pickle Module	https://patch-diff.githubusercontent.com/desk7/learn-python#reading--writing-binary-files-using-pickle-module
Dumping Data	https://patch-diff.githubusercontent.com/desk7/learn-python#dumping-data
Loading Data	https://patch-diff.githubusercontent.com/desk7/learn-python#loading-data
Example: Traversing a Binary File	https://patch-diff.githubusercontent.com/desk7/learn-python#example-traversing-a-binary-file
Reading & Writing a CSV File using csv Module	https://patch-diff.githubusercontent.com/desk7/learn-python#reading--writing-a-csv-file-using-csv-module
Reading CSV File	https://patch-diff.githubusercontent.com/desk7/learn-python#reading-csv-file
Writing CSV File	https://patch-diff.githubusercontent.com/desk7/learn-python#writing-csv-file
User Defined Functions, Modules & Packages	https://patch-diff.githubusercontent.com/desk7/learn-python#user-defined-functions-modules--packages
User Defined Functions	https://patch-diff.githubusercontent.com/desk7/learn-python#user-defined-functions
Function Structure	https://patch-diff.githubusercontent.com/desk7/learn-python#function-structure
Function Header	https://patch-diff.githubusercontent.com/desk7/learn-python#function-header
Function Body	https://patch-diff.githubusercontent.com/desk7/learn-python#function-body
Parameters and Arguments	https://patch-diff.githubusercontent.com/desk7/learn-python#parameters-and-arguments
Scope of Variables	https://patch-diff.githubusercontent.com/desk7/learn-python#scope-of-variables
Local Variables	https://patch-diff.githubusercontent.com/desk7/learn-python#local-variables
Global Variables	https://patch-diff.githubusercontent.com/desk7/learn-python#global-variables
Passing Objects of Mutable Type to a Function	https://patch-diff.githubusercontent.com/desk7/learn-python#passing-objects-of-mutable-type-to-a-function
Passing a List	https://patch-diff.githubusercontent.com/desk7/learn-python#passing-a-list
Passing a Dictionary	https://patch-diff.githubusercontent.com/desk7/learn-python#passing-a-dictionary
What is a Module? How to Create a Module?	https://patch-diff.githubusercontent.com/desk7/learn-python#what-is-a-module-how-to-create-a-module
Executable Scripts / Modules	https://patch-diff.githubusercontent.com/desk7/learn-python#executable-scripts--modules
What is a Package? Introduction to PyPi. How to Create a Python Package?	https://patch-diff.githubusercontent.com/desk7/learn-python#what-is-a-package-introduction-to-pypi-how-to-create-a-python-package
	https://patch-diff.githubusercontent.com/desk7/learn-python#introduction
	https://patch-diff.githubusercontent.com/desk7/learn-python#introduction-to-programming-languages
	https://patch-diff.githubusercontent.com/desk7/learn-python#introduction-to-python
	https://patch-diff.githubusercontent.com/desk7/learn-python#advantages-of-python
	https://patch-diff.githubusercontent.com/desk7/learn-python#installing-python-in-windows
Python Software Foundation website	https://www.python.org/downloads/
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0201a.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0201b.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0201c.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0201d.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#installing-python-in-macos-apple
Python Software Foundation website	https://www.python.org/downloads/
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0202a.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0202b.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0202c.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#execution-modes
	https://patch-diff.githubusercontent.com/desk7/learn-python#interactive-mode-of-execution
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0201c.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0201d.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#script-mode-of-execution
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0303a.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0303b.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0303c.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#python-fundamentals
	https://patch-diff.githubusercontent.com/desk7/learn-python#tokens-introduction
	https://patch-diff.githubusercontent.com/desk7/learn-python#tokens-keywords
	https://patch-diff.githubusercontent.com/desk7/learn-python#tokens-identifiers
	https://patch-diff.githubusercontent.com/desk7/learn-python#tokens-literals
	https://patch-diff.githubusercontent.com/desk7/learn-python#numeric-literals
	https://patch-diff.githubusercontent.com/desk7/learn-python#integer-literals
	https://patch-diff.githubusercontent.com/desk7/learn-python#floating-point-literals
	https://patch-diff.githubusercontent.com/desk7/learn-python#imaginary-literals
	https://patch-diff.githubusercontent.com/desk7/learn-python#boolean-literals
	https://patch-diff.githubusercontent.com/desk7/learn-python#string-literals
	https://patch-diff.githubusercontent.com/desk7/learn-python#special-literal
	https://patch-diff.githubusercontent.com/desk7/learn-python#collection-of-literals
	https://patch-diff.githubusercontent.com/desk7/learn-python#tokens-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#tokens-delimiters
	https://patch-diff.githubusercontent.com/desk7/learn-python#grouping
	https://patch-diff.githubusercontent.com/desk7/learn-python#punctuation-decoration-and-annotation
	https://patch-diff.githubusercontent.com/desk7/learn-python#assignmentbinding
	https://patch-diff.githubusercontent.com/desk7/learn-python#character-set
	https://patch-diff.githubusercontent.com/desk7/learn-python#blocks-and-indentation
	https://patch-diff.githubusercontent.com/desk7/learn-python#comments
	https://patch-diff.githubusercontent.com/desk7/learn-python#single-line-comments
	https://patch-diff.githubusercontent.com/desk7/learn-python#multiline-comments
	https://patch-diff.githubusercontent.com/desk7/learn-python#variables-objects--data-types
	https://patch-diff.githubusercontent.com/desk7/learn-python#what-are-objects--variables
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0501a.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0501b.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0501c.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0501d.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#variables--assignment-statements
	https://patch-diff.githubusercontent.com/desk7/learn-python#assignment
	https://patch-diff.githubusercontent.com/desk7/learn-python#deletion
	https://patch-diff.githubusercontent.com/desk7/learn-python#multiple-assignment
	https://patch-diff.githubusercontent.com/desk7/learn-python#tuple-swapping
	https://patch-diff.githubusercontent.com/desk7/learn-python#built-in-data-types
	https://patch-diff.githubusercontent.com/desk7/learn-python#numeric-types---int-float-complex-bool
	https://patch-diff.githubusercontent.com/desk7/learn-python#sequence-types---str-list-tuple
	https://patch-diff.githubusercontent.com/desk7/learn-python#set-type---set
	https://patch-diff.githubusercontent.com/desk7/learn-python#mapping-type---dict
	https://patch-diff.githubusercontent.com/desk7/learn-python#special-type---none
	https://patch-diff.githubusercontent.com/desk7/learn-python#type-checking
	https://patch-diff.githubusercontent.com/desk7/learn-python#type-casting
	https://patch-diff.githubusercontent.com/desk7/learn-python#implicit-type-casting
	https://patch-diff.githubusercontent.com/desk7/learn-python#explicit-type-casting
	https://patch-diff.githubusercontent.com/desk7/learn-python#mutable--immutable-data-types
	https://patch-diff.githubusercontent.com/desk7/learn-python#immutable-data-types
	https://patch-diff.githubusercontent.com/desk7/learn-python#mutable-data-types
	https://patch-diff.githubusercontent.com/desk7/learn-python#input--output
	https://patch-diff.githubusercontent.com/desk7/learn-python#how-to-accept-user-input
	https://patch-diff.githubusercontent.com/desk7/learn-python#displaying-output
	https://patch-diff.githubusercontent.com/desk7/learn-python#operators--expressions
	https://patch-diff.githubusercontent.com/desk7/learn-python#introduction-to-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#unary-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#binary-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#operators-in-python
	https://patch-diff.githubusercontent.com/desk7/learn-python#arithmetic-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#relational-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#assignment-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#logical-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#logical-state-of-operands
	https://patch-diff.githubusercontent.com/desk7/learn-python#identity-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#membership-operators
	https://patch-diff.githubusercontent.com/desk7/learn-python#expressions
	https://patch-diff.githubusercontent.com/desk7/learn-python#chained-expression
	https://patch-diff.githubusercontent.com/desk7/learn-python#conditional-expression
	https://patch-diff.githubusercontent.com/desk7/learn-python#operator-precedence-with-examples
	https://patch-diff.githubusercontent.com/desk7/learn-python#exercises
	https://patch-diff.githubusercontent.com/desk7/learn-python#errors--exception-handling
	https://patch-diff.githubusercontent.com/desk7/learn-python#error-types
	https://patch-diff.githubusercontent.com/desk7/learn-python#syntax-error
	https://patch-diff.githubusercontent.com/desk7/learn-python#script-mode
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0702a.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0702b.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#interactive-mode
	https://patch-diff.githubusercontent.com/desk7/learn-python#runtime-error
	https://patch-diff.githubusercontent.com/desk7/learn-python#runtime-error-examples
	https://patch-diff.githubusercontent.com/desk7/learn-python#logical-error
	https://patch-diff.githubusercontent.com/desk7/learn-python#example
	https://patch-diff.githubusercontent.com/desk7/learn-python#exceptions
	https://patch-diff.githubusercontent.com/desk7/learn-python#raise
	https://patch-diff.githubusercontent.com/desk7/learn-python#assert
	https://patch-diff.githubusercontent.com/desk7/learn-python#exception-handling
	https://patch-diff.githubusercontent.com/desk7/learn-python#control-flow
	https://patch-diff.githubusercontent.com/desk7/learn-python#introduction-to-control-flow
	https://patch-diff.githubusercontent.com/desk7/learn-python#sequential-flow
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0802a.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0802b.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#selection-statements-if--else
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0803a.png
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0803b.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#examples
	https://patch-diff.githubusercontent.com/desk7/learn-python#iteration-for
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0804a.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#list-iteration
	https://patch-diff.githubusercontent.com/desk7/learn-python#tuple-iteration
	https://patch-diff.githubusercontent.com/desk7/learn-python#string-iteration
	https://patch-diff.githubusercontent.com/desk7/learn-python#range-iteration
	https://patch-diff.githubusercontent.com/desk7/learn-python#exercises-1
	https://patch-diff.githubusercontent.com/desk7/learn-python#iteration-while
	https://patch-diff.githubusercontent.com/desk7/learn-python/blob/main/images/0805a.png
	https://patch-diff.githubusercontent.com/desk7/learn-python#exercises-2
	https://patch-diff.githubusercontent.com/desk7/learn-python#jump-statements
	https://patch-diff.githubusercontent.com/desk7/learn-python#pass
	https://patch-diff.githubusercontent.com/desk7/learn-python#break
	https://patch-diff.githubusercontent.com/desk7/learn-python#continue
	https://patch-diff.githubusercontent.com/desk7/learn-python#nested-loops
	https://patch-diff.githubusercontent.com/desk7/learn-python#factorial
	https://patch-diff.githubusercontent.com/desk7/learn-python#nested-loop---break
	https://patch-diff.githubusercontent.com/desk7/learn-python#strings
	https://patch-diff.githubusercontent.com/desk7/learn-python#strings-introduction--creation
	https://patch-diff.githubusercontent.com/desk7/learn-python#escape-characters
	https://patch-diff.githubusercontent.com/desk7/learn-python#unicode-support
	https://patch-diff.githubusercontent.com/desk7/learn-python#other-types-to-string
	https://patch-diff.githubusercontent.com/desk7/learn-python#accessing-characters-of-a-string
	https://patch-diff.githubusercontent.com/desk7/learn-python#length-of-string
	https://patch-diff.githubusercontent.com/desk7/learn-python#string-operations
	https://patch-diff.githubusercontent.com/desk7/learn-python#slicing
	https://patch-diff.githubusercontent.com/desk7/learn-python#membership
	https://patch-diff.githubusercontent.com/desk7/learn-python#concatenation
	https://patch-diff.githubusercontent.com/desk7/learn-python#repetition
	https://patch-diff.githubusercontent.com/desk7/learn-python#introduction-to-string-methods
	https://patch-diff.githubusercontent.com/desk7/learn-python#convert-case-of-strings
	https://patch-diff.githubusercontent.com/desk7/learn-python#lower
	https://patch-diff.githubusercontent.com/desk7/learn-python#upper
	https://patch-diff.githubusercontent.com/desk7/learn-python#swapcase
	https://patch-diff.githubusercontent.com/desk7/learn-python#capitalize
	https://patch-diff.githubusercontent.com/desk7/learn-python#title
	https://patch-diff.githubusercontent.com/desk7/learn-python#check-characters-of-a-string
	https://patch-diff.githubusercontent.com/desk7/learn-python#isalpha
	https://patch-diff.githubusercontent.com/desk7/learn-python#isdigit
	https://patch-diff.githubusercontent.com/desk7/learn-python#isalnum
	https://patch-diff.githubusercontent.com/desk7/learn-python#isascii
	https://patch-diff.githubusercontent.com/desk7/learn-python#islower
	https://patch-diff.githubusercontent.com/desk7/learn-python#isupper
	https://patch-diff.githubusercontent.com/desk7/learn-python#isspace
	https://patch-diff.githubusercontent.com/desk7/learn-python#istitle
	https://patch-diff.githubusercontent.com/desk7/learn-python#split-a-string
	https://patch-diff.githubusercontent.com/desk7/learn-python#partition
	https://patch-diff.githubusercontent.com/desk7/learn-python#split
	https://patch-diff.githubusercontent.com/desk7/learn-python#strip-characters-from-a-string
	https://patch-diff.githubusercontent.com/desk7/learn-python#lstrip
	https://patch-diff.githubusercontent.com/desk7/learn-python#rstrip
	https://patch-diff.githubusercontent.com/desk7/learn-python#strip
	https://patch-diff.githubusercontent.com/desk7/learn-python#check-prefix-or-suffix-in-a-string
	https://patch-diff.githubusercontent.com/desk7/learn-python#find--replace-characters-in-a-string
	https://patch-diff.githubusercontent.com/desk7/learn-python#count
	https://patch-diff.githubusercontent.com/desk7/learn-python#find
	https://patch-diff.githubusercontent.com/desk7/learn-python#rfind
	https://patch-diff.githubusercontent.com/desk7/learn-python#index
	https://patch-diff.githubusercontent.com/desk7/learn-python#rindex
	https://patch-diff.githubusercontent.com/desk7/learn-python#replace
	https://patch-diff.githubusercontent.com/desk7/learn-python#traversing-a-string
	https://patch-diff.githubusercontent.com/desk7/learn-python#using-for
	https://patch-diff.githubusercontent.com/desk7/learn-python#using-while
	https://patch-diff.githubusercontent.com/desk7/learn-python#list
	https://patch-diff.githubusercontent.com/desk7/learn-python#what-is-a-python-list-how-to-create-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#accessing-items-of-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#length-of-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#negative-indexing
	https://patch-diff.githubusercontent.com/desk7/learn-python#modifying-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#removing-item-from-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#list-operations
	https://patch-diff.githubusercontent.com/desk7/learn-python#membership-1
	https://patch-diff.githubusercontent.com/desk7/learn-python#concatenation-1
	https://patch-diff.githubusercontent.com/desk7/learn-python#repetition-1
	https://patch-diff.githubusercontent.com/desk7/learn-python#slicing-1
	https://patch-diff.githubusercontent.com/desk7/learn-python#traversing-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#direct-traversal
	https://patch-diff.githubusercontent.com/desk7/learn-python#location-or-index-based-traversal
	https://patch-diff.githubusercontent.com/desk7/learn-python#built-in-functions-that-can-be-used-for-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#introduction-to-list-methods
	https://patch-diff.githubusercontent.com/desk7/learn-python#adding-items-to-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#removing-items-from-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#counting-or-locating-items-in-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#reversing-items
	https://patch-diff.githubusercontent.com/desk7/learn-python#sorting-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#copying-a-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#nested-list
	https://patch-diff.githubusercontent.com/desk7/learn-python#list-comprehension
	https://patch-diff.githubusercontent.com/desk7/learn-python#member-wise-operation
	https://patch-diff.githubusercontent.com/desk7/learn-python#filtering-or-subsequence
	https://patch-diff.githubusercontent.com/desk7/learn-python#sample-programs
	https://patch-diff.githubusercontent.com/desk7/learn-python#1-min-max-and-mean
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