Python is a versatile, general purpose programming language created by Guido Van Rossum in 1991. It is widely used for tasks like web development, machine learning, scientific computing, and more. Python code is written in a simple, easy to read syntax and then interpreted to run. To use Python, one must download and install the Python interpreter for their operating system and configure environment variables to point to the Python executable.

1. INTRODUCTION TO PYTHON

2. WHAT IS PYTHON?
• Python is a general purpose ,high level object -
oriented,interpreted language with easy syntax and
dynamic semantics.
• Created by Guido Van Rossum in 1989 and was
released in 1991.
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3. WHY IS PYTHON POPULAR?
• Python is the language preferred by beginners and pros alike.
• Python is open source language which makes it free for everyone
to use.
• Python is also versatile and widely used in every technical field,
such as Machine Leaning,Artificial Intelligence,Web
Development, Mobile Application, Desktop Application, Scientific
Calculation, etc.
• Python has a great community who constantly make libraries and
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4. UNIQUE FEATURES OF PYTHON
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5. HISTORY OF PYTHON
• Python laid its foundation in the late 1980s.
• The implementation of Python was started in December 1989 by Guido Van
Rossum at CWI in Netherland.
• In February 1991, Guido Van Rossum published the code (labeled version
0.9.0) to alt.sources.
• In 1994, Python 1.0 was released with new features like lambda, map, filter,
and reduce.
• Python 2.0 added new features such as list comprehensions, garbage
collection systems.
• On December 3, 2008, Python 3.0 (also called "Py3K") was released. It was
designed to rectify the fundamental flaw of the language.
• ABC programming language is said to be the predecessor of Python
language, which was capable of Exception Handling and interfacing with the
Amoeba Operating System.
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6. VERSIONS OF PYTHON
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Python Version Released Date
Python 1.0 January 1994
Python 1.5 December 31, 1997
Python 1.6 September 5, 2000
Python 2.0 October 16, 2000
Python 2.1 April 17, 2001
Python 2.2 December 21, 2001
Python 2.3 July 29, 2003
Python 2.4 November 30, 2004
Python 2.5 September 19, 2006
Python 2.6 October 1, 2008
Python 2.7 July 3, 2010
Python 3.0 December 3, 2008
Python 3.1 June 27, 2009
Python 3.2 February 20, 2011
Python 3.3 September 29, 2012
Python 3.4 March 16, 2014
Python 3.5 September 13, 2015
Python 3.6 December 23, 2016
Python 3.7 June 27, 2018
Python 3.8 October 14, 2019

7. IDE FOR PYTHON
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8. INSTALL PYTHON
• URL
https://www.python.org/downloads/
Down load as per requirement like:
Operating System 32-bit or 64-bit
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9. CHECK THE OS IS 32-BIT OR 64-BIT
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10. CHECK THE OS IS 32-BIT OR 64-BIT
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11. INSTALLATION STEPS:INSTALL LATEST
VERSION
1. To follow the installation procedure, you need to be connected to the
Internet.
2. Visit https://www.python.org/downloads/release/python-3.9/
3. At the bottom locate Windows x86-64 executable
installer for 64 bits OS and Windows x86 executable
 installer for 32 bits OS
4. Click on the located installer file to download.
5. After download completes, double click on the installer file to start the
installation procedure.
6. Follow the instructions as per the installer.
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12. ENVIRONMENT SET UP
• Select the Start button, then select Control Panel > Appearance and
Personalization.
• Select Folder Options, then select the View tab.
• Under Advanced settings, select Show hidden files, folders, and drives,
and then select OK.
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13. SET THE PATH FOR PYTHON
• On Command prompt
Set Path =
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Limitation – Once the command prompt window is closed, path vanishes. The
solution is to set the Environment variable.

14. SET THE PATH FOR PYTHON
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15. SET THE PATH FOR PYTHON
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16. SET THE PATH FOR PYTHON
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17. TEST THE PYTHON INSTALLATION
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18. TEST THE PYTHON INSTALLATION
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19. HOW TO FIND PATH FOR PYTHON
INSTALLATION
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Find the installed path for Python (Type one line at a time)
>>> import os
>>> import sys
>>> os.path.dirname(sys.executable)

20. WRITING & EXECUTING PYTHON PROGRAM
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21. EXIT THE PYTHON COMMAND LINE
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