Thanks to visit codestin.com
Credit goes to github.com

Skip to content

DOC: add section on setting random number seeds #9123

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Aug 30, 2017
Merged

DOC: add section on setting random number seeds #9123

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
17 changes: 17 additions & 0 deletions doc/devel/testing.rst
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -139,6 +139,23 @@ execution (such as created figures or modified rc params). The pytest fixture
:func:`~matplotlib.testing.conftest.mpl_test_settings` will automatically clean
these up; there is no need to do anything further.

Random data in tests
--------------------

Random data can is a very convenient way to generate data for examples,
however the randomness is problematic for testing (as the tests
must be deterministic!). To work around this set the seed in each test.
For numpy use::

import numpy as np
np.random.seed(19680801)

and Python's random number generator::

import random
random.seed(19680801)

The seed is John Hunter's birthday.

Writing an image comparison test
--------------------------------
Expand Down