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| From | Matthias Kievernagel <mkiever@Pirx.sirius.org> |
| Newsgroups | comp.lang.python |
| Subject | Re: how to do random / SystemRandom switch |
| Date | Sat, 30 Apr 2011 13:28:36 +0000 (UTC) |
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Peter Otten <__peter__@web.de> wrote: > Matthias Kievernagel wrote: > >> In my top-level script I want to select if my program >> is to use random.xxx functions or the random.SystemRandom.xxx >> ones. All the other modules shouldn't know about that >> switch and simply use >> import random >> ... >> return random.randint(1, 6) >> ... >> for example. > > You can inject the SystemRandom instance into the sys.modules cache: > >>>> import random >>>> random > <module 'random' from '/usr/lib/python2.6/random.pyc'> >>>> sr = random.SystemRandom() >>>> import sys >>>> sys.modules["random"] = sr > > Then use it in the other modules: > >>>> import random >>>> random > <random.SystemRandom object at 0x1acdb60> > > Another approach is to monkey-patch the random module: > > import random > sr = random.SystemRandom() > random.randrange = sr.randrange > random.randint = sr.randint > ... > Thanks a lot. That's what I was looking for. I'll give both a try. Regards, Matthias Kievernagel
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Re: how to do random / SystemRandom switch Peter Otten <__peter__@web.de> - 2011-04-30 15:06 +0200 Re: how to do random / SystemRandom switch Matthias Kievernagel <mkiever@Pirx.sirius.org> - 2011-04-30 13:28 +0000
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