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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>I see this was reported as a debian bug. <a href="http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=665776">http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=665776</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We encountered it as well.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>To reproduce, using virtualenv 1.7+ on Python 2.7.2 on Ubuntu, create a virtualenv. Move that virtualenv to a host with Python 2.7.3RC2 yields:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>jaraco@vdm-dev:~$ /usr/bin/python2.7 -V<o:p></o:p></p><p class=MsoNormal>Python 2.7.3rc2<o:p></o:p></p><p class=MsoNormal>jaraco@vdm-dev:~$ env/bin/python -V<o:p></o:p></p><p class=MsoNormal>Python 2.7.2<o:p></o:p></p><p class=MsoNormal>jaraco@vdm-dev:~$ env/bin/python -c "import os; os.urandom()"<o:p></o:p></p><p class=MsoNormal>Traceback (most recent call last):<o:p></o:p></p><p class=MsoNormal> File "<string>", line 1, in <module><o:p></o:p></p><p class=MsoNormal>AttributeError: 'module' object has no attribute 'urandom'<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This bug causes Django to not start properly (under some circumstances).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I reviewed the changes between v2.7.2 and 2.7 (tip) and it seems there was substantial refactoring of the os and posix modules for urandom.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I still don’t fully understand why the urandom method is missing (because the env includes the python 2.7.2 executable and stdlib).<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I suspect this change is going to cause some significant backward compatibility issues. Is there a recommended workaround? Should I file a bug?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards,<o:p></o:p></p><p class=MsoNormal>Jason<o:p></o:p></p></div></body></html>