How to pass a string variable from shell script to python with sys.argv?

Question

I would like to pass a string variable from a Shell Script to my python script and have it stored in sys.argv[1]. Currently, this is my situation:

main.sh

TEST="This is a test"
python main.py $TEST

main.py

if __name__ == '__main__':
     print(sys.argv[1])

result:

This

How do I send $TEST so that sys.argv[1] = "This is a test"? I don't want to have to reconstruct the String after sending it.

@FreddyMcloughlan that will return a list of all the argv and filename. Example: ['main.py', 'This', 'is', 'a', 'test'] — Hoxlegion
– Hoxlegion, Commented May 12, 2022 at 11:43

Januka samaranyake · Accepted Answer · 2022-05-13 08:08:13Z

7

Edit your main.sh to following :

TEST="This is a test"
python main.py "${TEST}"

Variable needs to expanded inside "" and will be transformed into its value.

main.py

if __name__ == '__main__':
     print(sys.argv[1])

Result:

This is a test

answered May 12, 2022 at 11:41

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Comments

Freddy Mcloughlan · Accepted Answer · 2022-05-12 11:51:12Z

2

Just use:

python main.py "$TEST"

Freddy Mcloughlan

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answered May 12, 2022 at 11:44

pL3b

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