How do I write to a Python subprocess' stdin?

Question

I\'m trying to write a Python script that starts a subprocess, and writes to the subprocess stdin. I\'d also like to be able to determine an action to be taken if the subpro

Answer 1

You can provide a file-like object to the stdin argument of subprocess.call().

The documentation for the Popen object applies here.

To capture the output, you should instead use subprocess.check_output(), which takes similar arguments. From the documentation:

>>> subprocess.check_output(
...     "ls non_existent_file; exit 0",
...     stderr=subprocess.STDOUT,
...     shell=True)
'ls: non_existent_file: No such file or directory\n'