Unless documented otherwise, Python’s C API is covered by the Backwards Compatibility Policy, PEP 387. Most changes to it are source-compatible (typically by only adding new API). Changing existing...

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 incomp...

Python code in one module gains access to the code in another module by the process of importing it. The import statement is the most common way of invoking the import machinery, but it is not the ...

Author, A.M. Kuchling (amk at amk.ca),. This article explains the new features in Python 2.7. Python 2.7 was released on July 3, 2010. Numeric handling has been improved in many ways, for both floa...

Editor, Pablo Galindo Salgado,. This article explains the new features in Python 3.10, compared to 3.9. Python 3.10 was released on October 4, 2021. For full details, see the changelog. Summary – R...

Source code: Lib/statistics.py This module provides functions for calculating mathematical statistics of numeric ( Real-valued) data. The module is not intended to be a competitor to third-party li...

Source code: Lib/ipaddress.py ipaddress provides the capabilities to create, manipulate and operate on IPv4 and IPv6 addresses and networks. The functions and classes in this module make it straigh...

Source code: Lib/calendar.py This module allows you to output calendars like the Unix cal program, and provides additional useful functions related to the calendar. By default, these calendars have...

Source code: Lib/random.py This module implements pseudo-random number generators for various distributions. For integers, there is uniform selection from a range. For sequences, there is uniform s...

Python can be initialized with Py_InitializeFromConfig() and the PyConfig structure. It can be preinitialized with Py_PreInitialize() and the PyPreConfig structure. There are two kinds of configura...