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I want to use a value from an environment variable. I have set it in the ~/.bashrc file and I am able to see that in the new shells and in the current shell(obviously, after sourceing it). However, when I import the same variable in Python3 shell(both in the existing and in the new shells), the value returned is always None.

I read a lot and found a relatable answer but it did not solve my problem or rather, I could not understand it.

My bashrc file is:

SLACK_URL="https://hooks.slack.com/"

I am able to see the value in the terminal but not in the Python shell:

[email protected]:~$ echo $SLACK_URL https://hooks.slack.com/ [email protected]:~$ python3 Python 3.6.8 (default, Jan 14 2019, 11:02:34) [GCC 8.0.1 20180414 (experimental) [trunk revision 259383]] on linux Type "help", "copyright", "credits" or "license" for more information. >>> import os >>> os.getenv('SLACK_URL') >>>

I expect to see the actual variable's value but instead I am getting None.

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    What's hard to understand about that answer? It literally says: use export when defining the env var. Commented Jul 31, 2019 at 12:23

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You need to export the variable in your .bashrc file so other programs can see it:

export SLACK_URL="https://hooks.slack.com/"

For more about what export does, see here: https://askubuntu.com/questions/58814/how-do-i-add-environment-variables

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This is a common duplicate; by having answered it you have now made it that much harder for the OP to delete their question if they so wish, however.

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