The cmath Module

The cmath module shown in Example 1-61 contains a number of mathematical operations for complex numbers.

Example 1-61. Using the cmath Module

File: cmath-example-1.py

import cmath

print "pi", "=>", cmath.pi
print "sqrt(-1)", "=>", cmath.sqrt(-1)

pi => 3.14159265359
sqrt(-1) => 1j

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