Question

See this simple code:

$ python
>>> from subprocess import *  
>>> call(['echo','Hi'])
Hi
0

My problem looks simple. I don’t want this 0 at the end of the call.
Every function called by call appears with this and this messes up things for conditional tests.

Something like:

if int(call(['function', 'parameter']))>10:
    print 'yes'

So how can I receive only

Hi

in this example?

Answer 1

You want to use Popen with communicate, as described in the docs:

>>> from subprocess import *
>>> Popen(['echo', 'Hi'], stdout=PIPE).communicate()[0]
'Hi\n'