Python popen

 

외부 파일을 실행하고 출력 확인

 

System

>>> import os
>>> r = os.popen("dir *.exe").read()
The system cannot find the path specified.
>>> r
' Volume in drive C is VdW7u\n Volume Serial Number is 0000-0000\n\n Directory o
f C:\\Python38\n\n2020-07-20  16:03           100,424 python.exe\n2020-07-20  16
:03            98,888 pythonw.exe\n               2 File(s)        199,312 bytes
\n               0 Dir(s)   8,375,424 bytes free\n'

 

Subprocess

>>> import subprocess
>>> r = subprocess.Popen("xcopy.exe", stdout=subprocess.PIPE, stderr=subproce
ss.PIPE)
>>> r.communicate()
(b'0 File(s) copied\r\n', b'Invalid number of parameters\r\n')