Python create shell for several processes

Question

I have several command execution in python on Windows using subprocess.call(), but for each one I need to execute batch file with environmet setup before calling proper command, it looks like this

subprocess.call(precommand + command)

Is there way to "create" shell in python that will have batch file executed only once and in that shell command will be executed several times?

jfs · Accepted Answer · 2016-01-01 03:27:49Z

1

Write commands to a bat-file (tempfile.NamedTemporaryFile())
Run the bat-file (subprocess.check_call(bat_file.name))

(not tested):

#!/usr/bin/env python
from __future__ import print_function
import os
import subprocess
import tempfile

with tempfile.NamedTemporaryFile('w', suffix='.bat', delete=False) as bat_file:
    print(precommand, file=bat_file)
    print(command, file=bat_file)
rc = subprocess.call(bat_file.name)
os.remove(bat_file.name)
if rc != 0:
    raise subprocess.CalledProcessError(rc, bat_file.name)

answered Jan 1, 2016 at 3:27

jfs

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Comments

Eugene Primako · Accepted Answer · 2015-12-31 12:20:36Z

0

Do you need to get output from every command separately? If no - you can convey these commands using &&, || or ;

cd dir && cp test1 test2 && cd -

answered Dec 31, 2015 at 12:20

Eugene Primako

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1 Comment

miqelm Over a year ago

And here goes problem that those commands are quite long, so only 10% of them can be executed due to too long command

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