random.setstate(getstate()) can't restore the state of generator to what it was at the time getstate() was called

[ironpythonbot]

In the below code, two results of "[a.random() for i in xrange(10)]" should be
same:

E:\2.5test\ironpythonCompatableFor2.5\25\Lib>ipy  
IronPython console: IronPython 2.0A5 (2.0.11011.00) on .NET 2.0.50727.42  
Copyright (c) Microsoft Corporation. All rights reserved.  

>>> import random  
a = random.Random()  
a.seed()  
state = a.getstate()  
[a.random() for i in xrange(10)]  
[0.0606536218248, 0.227661377856, 0.383911680143, 0.0532521740781,
0.64292679896  
7, 0.626307238651, 0.583549570564, 0.294446938808, 0.777077497345,
0.693130396629]  
a.setstate(state)  
[a.random() for i in xrange(10)]  
[0.296399478939, 0.512523207121, 0.643615922725, 0.0341588538299,
0.415964689765  
, 0.108518776534, 0.686661085899, 0.505765370329, 0.971637266675,
0.706592465614  
]  

Two result in Cpython 2.5 are same:

E:\2.5test\ironpythonCompatableFor2.5\25\Lib>python  
Python 2.5 (r25:51908, Sep 19 2006, 09:52:17) [MSC v.1310 32 bit (Intel)] on
win  
32  
Type "help", "copyright", "credits" or "license" for more information.  
import random  
a = random.Random()  
a.seed()  
state = a.getstate()  
[a.random() for i in xrange(10)]  
[0.29828293888054935, 0.0088578084426363946, 0.6956068877658238,
0.60082415615727158, 0.024660010547330358, 0.93204550535867003,
0.18639283049196298, 0.88948524149415675, 0.14358934586660388,
0.43360810573501363]  
a.setstate(state)  
[a.random() for i in xrange(10)]  
[0.29828293888054935, 0.0088578084426363946, 0.6956068877658238,
0.60082415615727158, 0.024660010547330358, 0.93204550535867003,
0.18639283049196298, 0.88948524149415675, 0.14358934586660388,
0.43360810573501363]  

import random  
a = random.Random()  
a.seed()  
state = a.getstate()  
[a.random() for i in xrange(10)]  
a.setstate(state)  
[a.random() for i in xrange(10)]  

Work Item Details

Original CodePlex Issue: Issue 23820
Status: Active
Reason Closed: Unassigned
Assigned to: Unassigned
Reported on: Jul 27, 2009 at 11:57 PM
Reported by: dfugate
Updated on: Feb 22, 2013 at 2:12 AM
Updated by: jdhardy
Custom value: Reported internally at Microsoft.
Test: test_random.py
CreatedDate: 11/6/2007
NewInternalID: 409627
OldInternalID: 319175
AreaPath: IronPython\Modules