Question

I know how to detect if my Python script’s stdout is being redirected (>) using sys.stdout.isatty() but is there a way to discover what it’s being redirected to?

For example:

python my.py > somefile.txt

Is there a way to discover the name somefile.txt on both Windows and Linux?

Answer 1

I doubt you can do that in a system-independent way. On Linux, the following works:

import os
my_output_file = os.readlink('/proc/%d/fd/1' % os.getpid())