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176 commits

Author SHA1 Message Date
Raymond Hettinger
7fc633f5a5 Add comments regarding speed/space/entropy trade-offs (GH-10885) 2018-12-04 00:13:38 -08:00
Raymond Hettinger
0a18e0510a Hoist the float conversion out of the inner loop. (GH-10430) 
Currently, the *n* and *total* variables get converted to floats each time they are multiplied by random().  This minor tweak does the conversion just once and gets a small speedup (approx 3%).
 2018-11-09 02:39:50 -08:00
Raymond Hettinger
e69cd169af
Minor code refactoring. Compute len() one fewer times on one code path. (GH-8094) 2018-07-04 15:28:20 -07:00
Raymond Hettinger
ddf7171911
bpo-24567: Random subnormal.diff (#7954) 
Handle subnormal weights for choices()
 2018-06-27 01:08:31 -07:00
Serhiy Storchaka
ec1622d56c
bpo-33144: Fix choosing random.Random._randbelow implementation. (GH-6563) 
random() takes precedence over getrandbits() if defined later
in the class tree.
 2018-05-08 15:45:15 +03:00
Wolfgang Maier
ba3a87aca3 bpo-33144: random.Random and subclasses: split _randbelow implementation (GH-6291) 2018-04-17 08:16:17 -07:00
Wolfgang Maier
091e95e900 bpo-33203: Ensure random.choice always raises IndexError on empty sequence (GH-6338) 2018-04-05 08:19:44 -07:00
Raymond Hettinger
132a7d7cdb bpo-31482: Missing bytes support for random.seed() version 1 (#3614) 
bpo-31482: Missing bytes support for random.seed() version 1 #3614
 2017-09-17 09:04:30 -07:00
Raymond Hettinger
f5ea83f486 random_triangular: sqrt() is more accurate than **0.5 (#3317) 2017-09-04 16:51:06 -07:00
leodema
9f396b605e fix comment (#1798) 2017-06-04 07:41:41 +01:00
Gregory P. Smith
163468a766 bpo-16500: Don't use string constants for os.register_at_fork() behavior (#1834) 
Instead use keyword only arguments to os.register_at_fork for each of the scenarios.
Updates the documentation for clarity.
 2017-05-29 10:03:41 -07:00
Antoine Pitrou
346cbd351e bpo-16500: Allow registering at-fork handlers (#1715) 
* bpo-16500: Allow registering at-fork handlers

* Address Serhiy's comments

* Add doc for new C API

* Add doc for new Python-facing function

* Add NEWS entry + doc nit
 2017-05-27 17:50:54 +02:00
Raymond Hettinger
bb2839b680 Issue #29055: Suppress upstream exception for random.choice() 2016-12-27 01:06:52 -08:00
Raymond Hettinger
bf87126a63 Issue 28475: Improve error message for random.sample() with k < 0. (Contributed by Francisco Couzo). 2016-11-21 14:34:33 -08:00
Raymond Hettinger
24e4239434 Fix typos 2016-11-13 00:42:56 -05:00
Raymond Hettinger
8567e58ae3 Minor code beautification 2016-11-01 22:23:11 -07:00
Raymond Hettinger
30d00e54dd Issue #18844: Make the various ways for specifing weights produce the same results. 2016-10-29 16:55:36 -07:00
Raymond Hettinger
9016f2864a Issue #18844: Make the number of selections a keyword-only argument for random.choices(). 2016-09-26 21:45:57 -07:00
Raymond Hettinger
28aa4a0684 Rename weighted_choices() to just choices() 2016-09-07 00:08:44 -07:00
Raymond Hettinger
e8f1e002c6 Issue #18844: Add random.weighted_choices() 2016-09-06 17:15:29 -07:00
Victor Stinner
e66987e626 os.urandom() now blocks on Linux 
Issue #27776: The os.urandom() function does now block on Linux 3.17 and newer
until the system urandom entropy pool is initialized to increase the security.

This change is part of the PEP 524.
 2016-09-06 16:33:52 -07:00
Raymond Hettinger
6579502c7e Merge 2016-09-04 11:17:48 -07:00
Raymond Hettinger
16eb827b33 Improve docs for random.seed() 2016-09-04 11:17:28 -07:00
Raymond Hettinger
2f9cc7ab0c Minor beautification (turn nested-if into a conjunction). 2016-08-31 23:00:32 -07:00
Raymond Hettinger
112835cb3e Merge 2016-08-31 15:01:28 -07:00
Raymond Hettinger
c7bab7cbf5 Issue #27706: Fix regression in random.seed(somestr, version=1) 2016-08-31 15:01:08 -07:00
Raymond Hettinger
650c1c9ddd Minor beautification 2016-06-25 05:36:42 +03:00
Martin Panter
e26da7c03a Issue #27171: Fix typos in documentation, comments, and test function names 2016-06-02 10:07:09 +00:00
Raymond Hettinger
d58a0b6876 merge 2014-05-25 17:28:38 -07:00
Raymond Hettinger
978c6abced Issue 13355: Make random.triangular degrade gracefully when low == high. 2014-05-25 17:25:27 -07:00
Raymond Hettinger
1f54814094 Improve readability 2014-05-19 20:21:43 +01:00
Raymond Hettinger
23042cda40 Issue #21470: Do a better job seeding the random number generator 
to fully cover its state space.
 2014-05-13 22:13:40 -07:00
Christian Heimes
f1dc3ee16d Issue #19218: Rename collections.abc to _collections_abc in order to speed up interpreter start 2013-10-13 02:04:20 +02:00
Raymond Hettinger
be74a3d721 Minor clean-up of function parameters in random(). 2013-10-05 21:52:06 -07:00
Raymond Hettinger
8fe47c3991 Minor clean-up of function parameters in random(). 2013-10-05 21:48:21 -07:00
Raymond Hettinger
f77cdbeff7 Issue #19169: Micro refactoring with a micro benefit for brevity and speed. 2013-10-05 17:18:36 -07:00
Senthil Kumaran
f5ce0122ce Removing the merge conflict markers. 
- my previous removal and hg resolve mark had still left them and hooks did not catch it too!
 2013-09-12 07:06:49 -07:00
Senthil Kumaran
b4055f294e merge from 3.3 
Improve the docstring of random.shuffle. Inform users not to provide int arg.
Addresses issue #14927
 2013-09-11 22:55:54 -07:00
Senthil Kumaran
f8ce51ab16 Improve the docstring of random.shuffle. Inform users not to provide int arg. 
Addresses issue #14927
 2013-09-11 22:54:31 -07:00
Serhiy Storchaka
46e1ce214b Issue #18783: Removed existing mentions of Python long type in docstrings, 
error messages and comments.
 2013-08-27 20:17:03 +03:00
Serhiy Storchaka
9594942716 Issue #18783: Removed existing mentions of Python long type in docstrings, 
error messages and comments.
 2013-08-27 19:40:23 +03:00
Andrew Svetlov
44e33f39bf Revert changes for #13355 by request from Raymond Hettinger 2013-04-13 18:04:19 +03:00
Andrew Svetlov
b4fd468f12 Revert changes for #13355 by request from Raymond Hettinger 2013-04-13 18:00:04 +03:00
Andrew Svetlov
730001163f Issue #13355: Raise ValueError on random.triangular call with invalid params. 
Initial patch by Yuriy Senko.
 2013-04-12 23:27:37 +03:00
Andrew Svetlov
a2dfc35a13 Issue #13355: Raise ValueError on random.triangular call with invalid params. 
Initial patch by Yuriy Senko.
 2013-04-12 23:21:01 +03:00
R David Murray
d9ebf4dc1f #17489: Add explanatory comment that __getstate__ is not called. 
We don't put coverage directives in the stdlib, but anyone looking at a
coverage report for Random should see the comment and understand why the lines
aren't covered.
 2013-04-02 13:10:52 -04:00
Serhiy Storchaka
06e5e730dd Issue #17141: random.vonmisesvariate() no more hangs for large kappas. 2013-02-10 19:29:54 +02:00
Serhiy Storchaka
ac99576a8e Issue #17141: random.vonmisesvariate() no more hangs for large kappas. 2013-02-10 19:29:20 +02:00
Serhiy Storchaka
6c22b1d760 Issue #17141: random.vonmisesvariate() no more hangs for large kappas. 2013-02-10 19:28:56 +02:00
Mark Dickinson
1b901baee5 Issue #17149: merge fix from 3.3. 2013-02-10 14:17:20 +00:00