0

I need help converting this bash line to Python 2.6:

# Bash line ssh -X ${var} users |tr ' ' '\n' |uniq |tr '\n' ' '

The output of this command will go to a variable as a string. So far, this is what I have in Python 2.6:

# Python implementation string = subprocess.call("ssh -X {0} users |tr \' \' \'\n\' |uniq |tr \'\n\' \' \'".format(var), shell=True)

Is this correct, or is there a better way to do this? Thank you.

Improve this question
7
  • 1
    You don't need to escape single quotes inside a double-quoted string. Commented Jan 8, 2020 at 17:52
  • Why do you need -X? You're not doing anything that uses X11. Commented Jan 8, 2020 at 17:55
  • Python 2 is dead now; but even if you can't move to version 3 immediately, certainly at least use 2.7. Commented Jan 8, 2020 at 18:11
  • ...but you do need to double backslashes in a regular Python string. (In recent Python versions there's a "raw" string type which doesn't require backslashes to be doubled.) Commented Jan 8, 2020 at 18:13
  • 1
    Also, subprocess.call() doesn't return a string at all! But you can switch to check_output() if you upgrade to 2.7, or reimplement it using the (clumsy but well documented) Popen + communicate() sequence. Commented Jan 8, 2020 at 18:19
Load 6 more related questions Show fewer related questions

0

Reset to default

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.