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,Python Programming — Complete Beginner's Study Guide 2
Table of Contents
01 Introduction to Python 3
02 Setting Up Your Environment 5
03 Variables & Data Types 7
04 Operators 10
05 Strings In-Depth 12
06 Control Flow – if / elif / else 15
07 Loops – for & while 18
08 Functions 21
09 Lists, Tuples & Sets 25
10 Dictionaries 29
11 File Handling 32
12 Error Handling & Exceptions 35
13 Object-Oriented Programming (OOP) 38
14 Modules & the Standard Library 43
15 Practice Exercises & Solutions 46
16 Quick-Reference Cheat Sheet 52
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01 Introduction to Python
What is Python?
Python is a high-level, general-purpose programming language created by Guido van Rossum and
first released in 1991. It is designed to be easy to read and write, making it one of the most
beginner-friendly programming languages in the world.
Python follows a philosophy often summarised as "readability counts" — its syntax resembles plain
English more than most other languages.
📝 Python's name comes from the British comedy group Monty Python, not the snake.
NOTE Guido van Rossum wanted a name that was short, unique, and slightly mysterious.
Why Learn Python?
• Beginner-friendly syntax — no complicated punctuation rules
• Huge community — millions of tutorials, forums, and libraries
• Versatile — used in web development, data science, AI, automation, game development,
and more
• High demand — one of the top 3 most-wanted skills on job boards worldwide
• Completely free and open-source
Where is Python Used?
Field Popular Libraries Example Use
Web Development Django, Flask frameworks Instagram, Pinterest built with
Python
Data Science NumPy, Pandas, Matplotlib Data analysis, charts, statistics
Machine Learning / AI TensorFlow, PyTorch, scikit-learn ChatGPT, image recognition
Automation / Scripting Selenium, Paramiko Auto-filling forms, scheduled tasks
Game Development Pygame 2D games and prototypes
Cybersecurity Scapy, Nmap wrappers Pen-testing, ethical hacking scripts
Python 2 vs Python 3
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There are two major versions of Python. Always use Python 3 — Python 2 reached end-of-life in
January 2020 and is no longer updated or supported.
Python 2 Python 3
Python 2 (Legacy) Python 3 (Current)
print "Hello" print("Hello")
/ does integer division / does true division
No longer supported Actively developed
Avoid for new projects Always choose this
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