Getting started with NumPy |  |
Getting started with NumPy | |
The NumPy module provides hundreds of useful mathematical
functions, as well as constants like pi
(π) and e (the base of natural
logarithms).
There are two ways to make these functions and constants available to your program.
Section 2.1, “Adding NumPy to your namespace”: for small programs and experimenting.
Section 2.2, “Practicing safe namespace hygiene”: this is how the professionals do it.
If your program is primarily doing computation, and you don't
use a lot of other modules, place this statement with the
other import statements at the top of your
script, and it will add all the names from the numpy module
to your namespace.
from numpy import *
You can then refer directly to the constants like pi and functions like array() and
arange(). Example:
>>> from numpy import * >>> print pi, e 3.14159265359 2.71828182846 >>> print arange(0.0, 1.0, 0.1) [ 0. 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9]