The modules described in this chapter provide miscellaneous servicesthat are available in all Python versions. Here's an overview:
| pydoc | | Documentation generator and online help system. |
| doctest | | A framework for verifying examples in docstrings. |
| unittest | | Unit testing framework for Python. |
| math | | Mathematical functions (sin() etc.). |
| cmath | | Mathematical functions for complex numbers. |
| random | | Generate pseudo-random numbers with various common distributions. |
| whrandom | | Floating point pseudo-random number generator. |
| bisect | | Array bisection algorithms for binary searching. |
| array | | Efficient arrays of uniformly typed numeric values. |
| ConfigParser | | Configuration file parser. |
| fileinput | | Perl-like iteration over lines from multiple inputstreams, with ``save in place'' capability. |
| xreadlines | | Efficient iteration over the lines of a file. |
| calendar | | Functions for working with calendars, including some emulation of the Unixcal program. |
| cmd | | Build line-oriented command interpreters. |
| shlex | | Simple lexical analysis for Unix shell-like languages. |
