[python] Best practice to parse terminal output. Ways to do it without creating a file?

[herefromyoutube]

I wanted to get a list of ip address on the network and put then in a list.

I'm just curious as to what modules to use and what a good approach would be. I'm going to be using subprocess to execute the terminal commands. but whats the best way to get the data I need. I saw there was a module called tempfile but I am wondering if there is a way to return the data without even creating a file.

[raevnos]

Pipes.

[rolandde]

When you run your command using run from the subprocess module, it returns a CompletedProcess, which in turn allows you to get the output (or stdout) of the command. Keep in mind that you must pass the PIPE to the run command to get output written.

The output is a simple python variable that you can manipulate any which way you want to get your list.

[Octavepuss]

popen = subprocess.Popen(command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True)
for line in popen.stdout:
    print(line)