>>> import subprocess
>>> subprocess.Popen("pwd")
<subprocess.Popen object at 0xa7692cc>
>>> subprocess.call(["ls", "-l"])
0
I have tried the above command in Python interactive shell and expect to see the output inside the shell environment. However, it ends up with just some return values.
What should I do in order to let the return results printed inside the shell?
It'd help to read the documentation first.
p = subprocess.Popen('pwd', stdout = subprocess.PIPE)
p.communicate() # returns (stdout, None)
Cat Plus Plus is right, however, if you prefer the call function, you can also do this like so:
import subprocess
import sys
subprocess.call('pwd', stdout=sys.stdout) # outputs results of `pwd` to stdout
import subprocess, sys subprocess.call('pwd', stdout=sys.stdout) Traceback (most recent call last): File "<input>", line 1, in <module> File "/usr/lib/python2.6/subprocess.py", line 480, in call return Popen(*popenargs, **kwargs).wait() File "/usr/lib/python2.6/subprocess.py", line 626, in __init__ errread, errwrite) = self._get_handles(stdin, stdout, stderr) File "/usr/lib/python2.6/subprocess.py", line 983, in _get_handles c2pwrite = stdout.fileno() AttributeError: PseudoFileOut instance has no attribute 'fileno'