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The math module

This module implements a number of mathematical operations for floating point numbers. The functions are generally thin wrappers around the platform C library functions of the same name, so results may vary slightly across platforms in normal cases, or vary a lot in exceptional cases.

The cmath module provides similar functionality for complex numbers.

Example: Using the math module
# File: math-example-1.py

import math

print "e", "=>", math.e
print "pi", "=>", math.pi
print "hypot", "=>", math.hypot(3.0, 4.0)

# and many others...

$ python math-example-1.py
e => 2.71828182846
pi => 3.14159265359
hypot => 5.0

See the Python Library Reference for a full list of functions.