Store output of subprocess.Popen call in a string [duplicate]

by

In Python 2.7 or Python 3

Instead of making a Popen object directly, you can use the subprocess.check_output() function to store output of a command in a string:

from subprocess import check_output
out = check_output(["ntpq", "-p"])

In Python 2.4-2.6

Use the communicate method.

import subprocess
p = subprocess.Popen(["ntpq", "-p"], stdout=subprocess.PIPE)
out, err = p.communicate()

out is what you want.

Important note about the other answers

Note how I passed in the command. The "ntpq -p" example brings up another matter. Since Popen does not invoke the shell, you would use a list of the command and options—["ntpq", "-p"].

More Related Contents:

  1. Running shell command and capturing the output
  2. A non-blocking read on a subprocess.PIPE in Python
  3. How to hide output of subprocess
  4. Python subprocess readlines() hangs
  5. Interactive input/output using Python
  6. Run command and get its stdout, stderr separately in near real time like in a terminal
  7. Launch a completely independent process
  8. Multiple inputs and outputs in python subprocess communicate
  9. Python C program subprocess hangs at “for line in iter”
  10. Popen with conflicting executable/path
  11. subprocess: deleting child processes in Windows
  12. How do I get ‘real-time’ information back from a subprocess.Popen in python (2.5)
  13. Use subprocess to send a password
  14. Kill a running subprocess call
  15. How to replicate tee behavior in Python when using subprocess?
  16. Ensuring subprocesses are dead on exiting Python program
  17. Subprocess timeout failure
  18. When to use Shell=True for Python subprocess module [duplicate]
  19. ‘^’ is ignored by Python – how to escape ‘^’ character in Popen Windows?
  20. Break the function after certain time
  21. What’s the difference between subprocess Popen and call (how can I use them)?
  22. Python subprocess in parallel
  23. Passing variables to a subprocess call [duplicate]
  24. In Python 2.5, how do I kill a subprocess?
  25. Why does subprocess.Popen() with shell=True work differently on Linux vs Windows?
  26. How to read the first byte of a subprocess’s stdout and then discard the rest in Python?
  27. Cannot find the file specified when using subprocess.call(‘dir’, shell=True) in Python
  28. Explain example pipeline from Python subprocess module
  29. subprocess.Popen in different console
  30. printing stdout in realtime from a subprocess that requires stdin

Leave a Comment