mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-04 00:48:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 8

bpo-36018: Add special value tests and make minor tweaks to the docs (GH-12096)

Browse source 
https://bugs.python.org/issue36018
This commit is contained in:
Raymond Hettinger 2019-02-28 09:16:25 -08:00 • committed by Miss Islington (bot)
parent ae2ea33d5d
commit ef17fdbc1c
3 changed files with 12 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Lib/statistics.py
View file

@ -735,7 +735,7 @@ class NormalDist:
return exp((x - self.mu)**2.0 / (-2.0*variance)) / sqrt(tau * variance)
def cdf(self, x):
'Cumulative density function: P(X <= x)'
'Cumulative distribution function: P(X <= x)'
if not self.sigma:
raise StatisticsError('cdf() not defined when sigma is zero')
return 0.5 * (1.0 + erf((x - self.mu) / (self.sigma * sqrt(2.0))))