1.2 History of Python (BT101CO)

• The Motivation: Van Rossum wanted a successor to the ABC language (which he had helped develop). ABC was easy to learn but lacked features like exception handling and interfacing with the Amoeba operating system.
• The Name: Despite the popular snake logo, the name is actually a tribute to the British comedy troupe Monty Python. Van Rossum was a fan of "Monty Python's Flying Circus" and wanted a name that was short, unique, and slightly mysterious.

Python 1.x (1991–2000): The Foundation

• 0.9.0 (1991): The first public code release. It already included classes, inheritance, exception handling, and core data types like list and dict.
• 1.0 (1994): Introduced functional programming tools: lambda, map, filter, and reduce.

Python 2.x (2000–2020): Mass Adoption

• 2.0 (2000): Introduced list comprehensions and a cycle-detecting garbage collector. This version shifted the development process to be more community-backed.
• 2.7 (2010): The final release of the 2.x series. It was maintained for an unusually long time (until January 1, 2020) to give developers time to migrate to Python 3.

Python 3.x (2008–Present): Modern Python

• 3.0 (2008): Known as "Py3K", this was a fundamental break from the past. It was not backward compatible with Python 2. It cleaned up many "warts" in the language:
  • print became a function: print().
  • Text strings became Unicode by default.
  • Integer division was refined (e.g., 3/2 equals 1.5 instead of 1).
• 3.11–3.13 (2022–2024): Recent updates have focused heavily on performance, making the language significantly faster and improving error messages for better developer experience.