How to capture streaming output in python from subprocess.communicate()

Question

Currently, I have something like this:

self.process = subprocess.Popen(self.cmd, stdout=subprocess.PIPE)
out, err = self.process.communicate()

Answer 1

The output goes to your calling process, essentially capturing the stdout from self.cmd, so that output does not go anywhere else.

What you need to do is to print it from the 'parent' process if you want to see the output.