Get the output of Linux command

getOutput.py

#!/usr/bin/env python
import os

def isActive(daemon):
    command = "systemctl is-active " + daemon + " > tmp"
    os.system(command)
    with open('tmp') as tmp:
        tmp = tmp.read()
        if "active" in tmp:
            os.remove('tmp')
            return 1
    return 0


sshd = "sshd"

print(isActive(sshd))