Two minor details:

1. It is possible that `fileno(stdout) != 1` even in C [1]. 
   I don't know what happens if the code from the answer is
   run on Windows.

   In principle, it may break eryksun's workaround. I don't 
   know how likely it is in practice.

2. you can redirect at the file descriptor level in Python [2] 
   using os.dup2(). I don't know whether the code in the 
   answer works on Windows.

[1] http://stackoverflow.com/questions/25516375/is-it-possible-that-filenostdout-1-on-a-posix-system
[2] http://stackoverflow.com/questions/4675728/redirect-stdout-to-a-file-in-python/22434262#22434262