CODEWITHSUNDEEP
pythonsubprocesspopen
tkrishtop
tkrishtop

Reputation: 816

Python2.7 subprocess32: how to share environment between two scripts executed via Popen?

I have 2 scripts: 1. Config one, which modifies about 20 environment variables and runs another small script inside, and 2. The process one which uses environment variables set by script1 to do something.

I tried to execute them one by one via Python2.7 subprocess32.Popen() and pass the same env variable to both Popen. No success, environments from script1 are just empty for script2

import os
import subprocess32 as subprocess
my_env = os.environ
subprocess.Popen(script1, env=my_env)
subprocess.Popen(script2, env=my_env)

How I could actually share environment between 2 scripts?

Upvotes: 1

Views: 141

Answers (2)

Florian Weimer
Florian Weimer

Reputation: 33727

When the first subprocess exits, the changes to its environment are gone. Such changes are only propagated to its own subprocess. You need to do something like this:

import shlex

subprocess.Popen(". {}; {}".format(shlex.quote(script1),
                                   shlex.quote(script2)), 
                 shell=True)

But as always, using shell=True can introduce security issues.

Upvotes: 3

Druta Ruslan
Druta Ruslan

Reputation: 7412

I think that the problem is in my_env=my_env, second parameter need to be env.

my_env = os.environ
subprocess.Popen(script1, env=my_env)
my_env = os.environ
subprocess.Popen(script2, env=my_env)

Upvotes: 1

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