how to get non-blocking file descriptors from a popen?

Gregory P. Smith gsmith-mysterymeat at
Thu Jan 24 19:05:51 EST 2002

Using os.popen (or better, popen2.Popen4 objects), how can I switch the 
returned file objects to non-blocking io mode for appropriate use with 

Gregory P. Smith   [remove mystery meat from my address when replying]

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