set the environment variable using python

Question

I basically want to set path for some of the variables using source . Scripting language python .subprocess.call call source /home/local/APPSCRIPT.env but not actually setting the environment variable.

sample script :

import os
from subprocess import Popen, PIPE
import subprocess

subcall=subprocess.call(['source /home/local/APPSCRIPT.env'],shell=True)

Please suggest how can i set the environment variable from APPSCRIPT.env

APPSCRIPT.env :

export xxx_SIZE=1
export yyy_USE=FALSE
export zzz_INCREMENTAL=FALSE

Daniel Roseman · Accepted Answer · 2017-05-11 11:14:45Z

2

You can't do this.

subprocess runs in, well, a subprocess. There's no way for any environment changes made in a subprocess to affect the calling process.

The only way to change environment variables for the current process in Python is to directly modify the sys.environ dictionary.

answered May 11, 2017 at 11:14

Daniel Roseman

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3 Comments

Ma0 Over a year ago

Are the changes made in the sys.environ dict accessible from outside Python? say from the cmd for example?

Daniel Roseman Over a year ago

No, for precisely the same reason.

user092 Over a year ago

I have to set multiple environment variable in one shot . Could you please give some example or any doc link so i can refer

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