Modular Programming with Python

The Python Standard Library

One of the buzzwords used to describe Python is that it is a batteries included language, that is, it comes with a rich collection of built-in modules and packages called the Python Standard Library. If you've written any non-trivial Python program, you've almost certainly used modules from the Python Standard Library to do so. To get an idea of how vast the Python Standard Library is, here are a few example modules from this library:

Module	Description
datetime	Defines classes to store and perform calculations using date and time values
tempfile	Defines a range of functions to work with temporary files and directories
csv	Supports reading and writing of CSV format files
hashlib	Implements cryptographically ...