🐍 Introduction to Python
Module 1 Β· Topic 1

What is Python & Its History

Python is a high-level, interpreted, general-purpose programming language created by Guido van Rossum. It powers everything from Instagram to NASA's systems.

Theory

Python was conceived in the late 1980s by Guido van Rossum at Centrum Wiskunde & Informatica (CWI) in the Netherlands. The first public release, Python 0.9.0, came out in February 1991. The name comes from the British comedy series Monty Python's Flying Circus, not from the snake.

Timeline of Major Releases:

  • Python 1.0 (1994): Introduced lambda, map, filter, reduce
  • Python 2.0 (2000): Added list comprehensions, garbage collection
  • Python 3.0 (2008): Major overhaul β€” print became a function, Unicode by default, integer division changed
  • Python 3.12+ (2023–present): Performance improvements, better error messages, pattern matching

Why Python Dominates the Industry:

  1. Readable Syntax β€” Code reads almost like English pseudocode, reducing cognitive load
  2. Massive Ecosystem β€” Over 400,000+ packages on PyPI (Python Package Index)
  3. Cross-Domain Versatility β€” Web (Django, Flask, FastAPI), Data Science (Pandas, NumPy), AI/ML (TensorFlow, PyTorch), Automation, DevOps, IoT
  4. Enterprise Adoption β€” Used by Google, Netflix, Instagram, Spotify, Dropbox, NASA, CERN
  5. Community β€” One of the largest developer communities worldwide

How Python Executes Code:
Python source code (.py) β†’ Bytecode (.pyc) β†’ Python Virtual Machine (PVM) executes bytecode. This is why Python is called "interpreted" β€” though technically it compiles to bytecode first.

Python's Design Philosophy (The Zen of Python):

  • Beautiful is better than ugly
  • Explicit is better than implicit
  • Simple is better than complex
  • Readability counts
Syntax
# Run this to see the Zen of Python
import this

# Check Python version
import sys
print(sys.version)