Get system command output

Get system command output.
import subprocess

# file and directory listing
returned_text = subprocess.check_output("dir", shell=True, universal_newlines=True)

print("dir command to list file and directory")
print(returned_text)

Output:

6d2c5fa0-5ef2-11e6-8ff4-d5b1b3f27f4d  ead74d50-beb7-11e6-933b-4797884c7124
6d33f7a0-242d-11e7-820d-03f0e944369f  eae8e560-767d-11e6-a3fc-0fb5ebee9d44
6d36f6e0-8616-11e6-affa-0dc8296ec630  eafedbe0-ed01-11e6-a189-7956f7e10ca1
6d462c20-758e-11e6-a935-b7db6295ac51  eb190a30-bae6-11e6-a2d1-75a31a870ce2
------
7feae620-bece-11e6-ad81-456cada677e8  sss.dat\n
7fef9710-7fc2-11e6-97c3-c153b6e0fe23  temp.txt
7ff17310-9c22-11e6-9e03-95cb39e2a59d  test.txt
801a70f0-4414-11e6-a0ac-5bb3315a1c3b