abc — Abstract Base Classes
abc — Abstract Base Classes¶ Source code: Lib/abc.py This module provides the infrastructure for defining abstract base classes (ABCs) in Python, as outlined in PEP 3119; see the PEP for why this was added to Python. (See also PEP 3141 and the numbers module regarding a type hierarchy for numbers based on ABCs.) The collections module has some concrete classes that derive from ABCs; these can, of
What’s New In Python 3.1
What’s New In Python 3.1¶ Author: Raymond Hettinger This article explains the new features in Python 3.1, compared to 3.0. Python 3.1 was released on June 27, 2009. PEP 372: Ordered Dictionaries¶ Regular Python dictionaries iterate over key/value pairs in arbitrary order. Over the years, a number of authors have written alternative implementations that remember the order that the keys were origina
What’s New In Python 3.0
What’s New In Python 3.0¶ Author: Guido van Rossum This article explains the new features in Python 3.0, compared to 2.6. Python 3.0, also known as “Python 3000” or “Py3K”, is the first ever intentionally backwards incompatible Python release. Python 3.0 was released on December 3, 2008. There are more changes than in a typical release, and more that are important for all Python users. Nevertheles
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