command - How to run " ps cax | grep something " in Python? -

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how run command pipe | in it?

the subprocess module seems complex...

is there like

output,error = `ps cax | grep something`

as in shell script?

see replacing shell pipeline:

import subprocess import shlex proc1 = subprocess.popen(shlex.split('ps cat'),stdout=subprocess.pipe) proc2 = subprocess.popen(shlex.split('grep python'),stdin=proc1.stdout,                          stdout=subprocess.pipe,stderr=subprocess.pipe)  proc1.stdout.close() # allow proc1 receive sigpipe if proc2 exits. out,err=proc2.communicate() print('out: {0}'.format(out)) print('err: {0}'.format(err))

ps. using shell=true can dangerous. see example the warning in docs.

there sh module can make subprocess scripting in python lot more pleasant:

import sh print(sh.grep(sh.ps("cax"), 'something'))

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