Pipe Output to Python File

Question

How do a make a python script take input that has been piped to it. Is that a sys.argv moment. To be clear I want to figure out how to code the python side to receive input like this:

cat someFile | domeSomething.py

Can this be done? Again, to clarify, I'm not wanting to write this as passing a filename to my script and then using open(filename) I want to get piped input. Thanks for the help.

btw, cat somefile | foo should be spelled foo < somefile. — Wooble
– Wooble, Commented Mar 20, 2013 at 13:02

Pavel Anossov · Accepted Answer · 2013-03-20 13:00:35Z

5

To get piped input, you need to read from stdin:

import sys
print sys.stdin.read()

stdin is a file, so feel free to use any of the methods of a file object.

answered Mar 20, 2013 at 13:00

Pavel Anossov

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Bernhard Kausler Over a year ago

You should add a python hashbang, too: #!/usr/bin/env python

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