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simonw/subprocess_stdin_stdout.py

Created September 30, 2010 09:39
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subprocess_stdin_stdout.py
"""
Here's how to run a command from Python piping a string in to stdin and reading the
output back in to another string. It took me way too long to work this out.
"""
from subprocess import Popen, PIPE
output = Popen(
['java', '-jar', 'yuicompressor-2.4.2.jar', '--type=css'],
stdin=PIPE, stdout=PIPE
).communicate(input='/* a comment */ .foo {color: red}')[0]
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