Am 23.11.2010 11:55, schrieb Amaury Forgeot d'Arc: > Hi, > > 2010/11/23 Glenn Linderman <v+pyt...@g.nevcal.com>: >> File "C:\Python32\lib\random.py", line 108, in seed >> a = int.from_bytes(_urandom(32), 'big') >> WindowsError: [Error -2146893818] Invalid Signature > > In the subprocess documentation http://docs.python.org/library/subprocess.html > """On Windows, in order to run a side-by-side assembly the specified > env *must* include a valid SystemRoot."""
Indeed, setting SystemRoot might solve this problem. According to http://jpassing.com/2009/12/28/the-hidden-danger-of-forgetting-to-specify-systemroot-in-a-custom-environment-block/ CrypoAPI, in Windows 7, requires this variable be set. Failure to find the enhanced crypto provider would explain why the "random" module of Python fails to work. The specific cause is in the registry: HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Cryptography\Defaults\Provider\Microsoft Strong Cryptographic Provider has as it's ImagePath value %SystemRoot%\system32\rsaenh.dll So the registry (and COM) do rely on environment variables. Regards, Martin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
