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221 Commits

Author SHA1 Message Date
Matthias Görgens 8a55e2f920
bpo-37000: Remove obsolete comment in _randbelow_with_getrandbits (#95775) 2022-08-08 18:22:26 -05:00
Raymond Hettinger eb9c8a8bea
log2() is faster than log() (#95214) 2022-07-24 14:21:29 -05:00
Raymond Hettinger a2fbc51198
Compute v only when needed. (#95183) 2022-07-23 18:07:17 -05:00
Raymond Hettinger ed06ec1ab8
GH-81620: Add random.binomialvariate() (GH-94719) 2022-07-13 09:46:04 -05:00
Victor Stinner 47e35625ff
gh-84623: Remove unused imports (#94132) 2022-06-22 19:14:27 +02:00
Raymond Hettinger 68fec31364
gh-86388 Remove deprecated behaviors in randrange() (#92677) 2022-05-11 23:54:51 -05:00
Zackery Spytz 08ec80113b
bpo-46737: Add default arguments to random.gauss and normalvariate (GH-31360) 2022-02-15 17:12:15 -06:00
Miro Hrončok 6baa98e538
bpo-46624: Defer to 3.12: "Remove deprecated support for non-integer values" (GH-31098) 2022-02-03 07:48:13 -06:00
Raymond Hettinger 3fee7776e6
Move error test to the function that needs it. Improve error message. (GH-30008) 2021-12-09 20:24:50 -06:00
Raymond Hettinger 5afa0a4112
bpo-42222: Remove deprecated support for non-integer values (GH-28983) 2021-10-16 10:16:53 -05:00
Raymond Hettinger 9510e6f3c7
bpo-45155: Apply new byteorder default values for int.to/from_bytes (GH-28465) 2021-09-20 13:22:55 -05:00
Raymond Hettinger 70a071d9e1
bpo-40465: Remove random module features deprecated in 3.9 (GH-25874) 2021-05-04 10:55:40 +02:00
Raymond Hettinger b05352e4c2
bpo-44018: random.seed() no longer mutates its inputs (GH-25856) 2021-05-03 16:11:35 -07:00
Raymond Hettinger 2a36b09ce7
Improve the error message for choices(population, 10) (GH-25267) 2021-04-19 20:29:48 -07:00
Raymond Hettinger d9dda32040
Reduce overhead on random timings (GH-24455) 2021-02-04 21:36:03 -08:00
Serhiy Storchaka f066bd94b9
bpo-37319: Improve documentation, code and tests of randrange. (GH-19112) 2021-01-25 23:02:04 +02:00
jonanifranco f7b5bacd7a
bpo-42944 Fix Random.sample when counts is not None (GH-24235) 2021-01-18 10:04:29 -08:00
Setrak Balian 998ae1fa3f
bpo-42931: randbytes missing from random.__all__ (GH-24219) 2021-01-15 09:50:42 -08:00
Raymond Hettinger 8f8de7380c
No need to test "istep==1" twice. (GH-24064) 2021-01-02 12:09:56 -08:00
Raymond Hettinger 768fa145cf
bpo-42772: Step argument ignored when stop is None. (GH-24018) 2021-01-02 10:24:51 -08:00
Raymond Hettinger a9621bb301
bpo-42222: Modernize integer test/conversion in randrange() (#23064) 2020-12-28 11:10:34 -08:00
masklinn 1e27b57dbc
bpo-42470: Do not warn on sequences which are also sets in random.sample() (GH-23665) 2020-12-18 20:33:36 -08:00
Ram Rachum b0dfc75816
bpo-41773: Raise exception for non-finite weights in random.choices(). (GH-22441) 2020-09-28 18:32:10 -07:00
Raymond Hettinger 6a613f90bf
random module: Convert a "while 1" to "while True (GH-21700) 2020-08-02 12:03:32 -07:00
Raymond Hettinger 5c3270939c
bpo-41421: Algebraic simplification for random.paretovariate() (GH-21695) 2020-08-01 01:18:26 -07:00
Raymond Hettinger ef19bad7d6
Improve code organization for the random module (GH-21161) 2020-06-25 17:03:50 -07:00
Raymond Hettinger 26a1ad1c24
Small clean-ups for the random module (GH-21038) 2020-06-22 19:38:59 -07:00
Raymond Hettinger 9db5b8d448
Minor code clean-ups (GH-20838) 2020-06-13 09:46:47 -07:00
Raymond Hettinger 81a5fc38e8
bpo-40541: Add optional *counts* parameter to random.sample() (GH-19970) 2020-05-08 07:53:15 -07:00
Raymond Hettinger 190fac99c5
bpo-40465: Deprecate the optional argument to random.shuffle(). (#19867) 2020-05-02 16:45:32 -07:00
Raymond Hettinger 4168f1e460
Simplify choice()'s interaction with the private _randbelow() method (GH-19831) 2020-05-01 10:34:19 -07:00
Victor Stinner 2d8757758d
bpo-40286: Remove C implementation of Random.randbytes() (GH-19797) 
Remove _random.Random.randbytes(): the C implementation of
randbytes(). Implement the method in Python to ease subclassing:
randbytes() now directly reuses getrandbits().
 2020-04-29 18:49:00 +02:00
Raymond Hettinger 4fe002045f
bpo-40325: Deprecate set object support in random.sample() (GH-19591) 2020-04-19 00:36:42 -07:00
Antoine Pitrou 75a3378810
bpo-40282: Allow random.getrandbits(0) (GH-19539) 2020-04-17 19:32:14 +02:00
Victor Stinner 9f5fe7910f
bpo-40286: Add randbytes() method to random.Random (GH-19527) 
Add random.randbytes() function and random.Random.randbytes()
method to generate random bytes.

Modify secrets.token_bytes() to use SystemRandom.randbytes()
rather than calling directly os.urandom().

Rename also genrand_int32() to genrand_uint32(), since it returns an
unsigned 32-bit integer, not a signed integer.

The _random module is now built with Py_BUILD_CORE_MODULE defined.
 2020-04-17 19:05:35 +02:00
Raymond Hettinger 041d8b48a2
bpo-38881: choices() raises ValueError when all weights are zero (GH-17362) 2019-11-23 02:22:13 -08:00
Raymond Hettinger d0cdeaab76
bpo-32554: Deprecate hashing arbitrary types in random.seed() (GH-15382) 2019-08-22 09:19:36 -07:00
Serhiy Storchaka 2085bd0877
bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700) 2019-06-01 11:00:15 +03:00
Christian Heimes d914596a67 bpo-36559: random module: optimize sha512 import (GH-12742) 
The random module now prefers the lean internal _sha512 module over hashlib
for seed(version=2) to optimize import time.

Signed-off-by: Christian Heimes <christian@python.org>
 2019-04-10 13:18:02 -07:00
Raymond Hettinger 5382203ae1
Convert range to repeat for choices() (#11889) 2019-02-16 13:30:51 -08:00
Raymond Hettinger cfd31f0af2 Be consistent about the use of from-imports in random module (GH-11837) 
Minor code clean-up.
 2019-02-13 02:04:17 -08:00
Kumar Akshay 2433a2ab70 bpo-35782: Fix error message in randrange (GH-11620) 
https://bugs.python.org/issue35782
 2019-01-21 11:19:59 -08:00
leodema 63d152232e bpo-30561: Sync-up expovariate() and gammavariate code (GH-1934) 2018-12-23 22:54:25 -08:00
Victor Stinner 8db5b54463
bpo-35513, unittest: TextTestRunner uses time.perf_counter() (GH-11180) 
TextTestRunner of unittest.runner now uses time.perf_counter() rather
than time.time() to measure the execution time of a test: time.time()
can go backwards, whereas time.perf_counter() is monotonic.

Similar change made in libregrtest, pprint and random.
 2018-12-17 11:30:34 +01:00
Raymond Hettinger 09473ac063
Remove unnecessary and over-restrictive type check (GH-10905) 2018-12-04 14:53:14 -08:00
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