mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-07-09 20:35:26 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 11

bpo-42470: Do not warn on sequences which are also sets in random.sample() (GH-23665)

Browse source
This commit is contained in:
masklinn 2020-12-19 05:33:36 +01:00 • committed by GitHub
parent e009612476
commit 1e27b57dbc
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 25 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

13
Lib/random.py
View file

@ -424,13 +424,14 @@ class Random(_random.Random):
# too many calls to _randbelow(), making them slower and
# causing them to eat more entropy than necessary.
if isinstance(population, _Set):
_warn('Sampling from a set deprecated\n'
'since Python 3.9 and will be removed in a subsequent version.',
DeprecationWarning, 2)
population = tuple(population)
if not isinstance(population, _Sequence):
raise TypeError("Population must be a sequence. For dicts or sets, use sorted(d).")
if isinstance(population, _Set):
_warn('Sampling from a set deprecated\n'
'since Python 3.9 and will be removed in a subsequent version.',
DeprecationWarning, 2)
population = tuple(population)
else:
raise TypeError("Population must be a sequence. For dicts or sets, use sorted(d).")
n = len(population)
if counts is not None:
cum_counts = list(_accumulate(counts))