Okay, but I have a strange bug. Cython crashes when I try to compile `random.pyx`. Even compiling the master version of that file does not work. 

```
  File "/usr/lib/python2.7/cgi.py", line 51, in <module>
    import mimetools
  File "/usr/lib/python2.7/mimetools.py", line 6, in <module>
    import tempfile
  File "/usr/lib/python2.7/tempfile.py", line 34, in <module>
    from random import Random as _Random
ImportError: cannot import name Random
```

I am using Cython 0.20-dev.