CODEWITHSUNDEEP
pythonshell
GM1
GM1

Reputation: 491

How to use shell variables within a python script

I'd like to get shell variable content to be used within a python script, specifically to get path out of it to be used later for a function call to a python script located at another directory, using sys.path.insert

Let's assume my shell variable is called SHELL_VAR1, and I want to concatenate to it /scripts folder name, so I get flow like that - using in this example os.environ.get just to illustrate my need in case it was environment variable and not a shell variable - and the question is what should be used instead:

python -c 'import os; import sys;var1=os.environ.get('SHELL_VAR1'); sys.path.insert(1, 'var1' ''/scripts'');'

Upvotes: 0

Views: 390

Answers (1)

jkr
jkr

Reputation: 19260

A shell variable and environment variable are the same thing, in my understanding.

You can use pathlib for OS-agnostic filepath operations (like joining filepaths).

import os
from pathlib import Path
import sys

# This will raise a KeyError if the key is not in os.environ.
var1 = os.environ["SHELL_VAR1"]
path = Path(var1) / "scripts"
sys.path.insert(1, str(path))

Upvotes: 1

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