How to close subprocess in python

Question

I have a python code where i am using subprocess to get output of command "which opatch" in a function which gets output as unix path to getOpatch. Once that is done, how do I close the subprocess opened using Popen. Below is the code i use for calling subprocess. Thanks in advance.

import os
import subprocess

os.environ["ORACLE_HOME"] = X
os.environ["PATH"] += os.pathsep + os.pathsep.join([X + "/OPatch"])
getOpatch = subprocess.Popen("which opatch", shell=True, stdout=subprocess.PIPE).stdout
op_path = getOpatch.read()

Issue is when i run different function2 which has diff inputs ($PATH), subprocess variable2 is returning same value as in function1 — Varma403
– Varma403, Commented Jun 3, 2020 at 11:58
Please clarify your question. The subprocess automatically closes when done, there is no need to do so manually. Is your problem that your changes to os.environ persist? — MisterMiyagi
– MisterMiyagi, Commented Jun 3, 2020 at 12:00
Does this answer your question? Python subprocess/Popen with a modified environment — MisterMiyagi
– MisterMiyagi, Commented Jun 3, 2020 at 12:01
os.environ value changes when passing new value everytime but subprocess.Popen when fetching output of "which opatch" not changing to the latest. — Varma403
– Varma403, Commented Jun 3, 2020 at 12:51
Thanks MisterMiyagi...i get your point. Will check the suggestion and get back to you. — Varma403
– Varma403, Commented Jun 3, 2020 at 13:18

lolsu · Accepted Answer · 2020-06-03 11:56:14Z

2

subprocess.terminate() should kill it

answered Jun 3, 2020 at 11:56

lolsu

1039 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Varma403 Over a year ago

i am getting below error when using terminate. File "/z01/EBS_PATCH_TOOL/modules_seq.py", line 106, in OHome_1012 subprocess.terminate() AttributeError: 'module' object has no attribute 'terminate'

alani Over a year ago

This is because it should be getOpatch.terminate(). It is the Popen instance that has the terminate method, not subprocess directly.

alani Over a year ago

In any case, the command that is launched in this example (essentially sh -c 'which opatch') will exit immediately after printing a line of output, so there is no good reason to try to terminate it.

Collectives™ on Stack Overflow

How to close subprocess in python

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related