python_call_subprocess.py

import subprocess
from threading import Thread

def call_subprocess(cmd):
    proc = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    out, err = proc.communicate()
    if err:
        print(err)

thread = Thread(target=call_subprocess, args=['pip install --upgrade pip && pip install pysftp'])
thread.start()
thread.join()