Shell Script For Python Throws ModuleNotFoundError

Question

I'm trying to run a python script at start for my Raspberry Pi 3B. My shell script "atboot.sh" looks like this:

#!/bin/bash
cd /home/pi/pythoncodefolder
date >> logs
sudo python3 test.py >> logs

When I try to run it on cmd with sh atboot.sh command, I get an import error which is:

Traceback (most recent call last):
    File "test.py", line 5, in <module>
        import cv2
ModuleNotFoundError: No module named 'cv2'

But when I run the program on cmd without shell script, using python3 test.py, I get no errors.

Thanks.

Probably because of another user enviroment is used, because of sudo. — rawrex
– rawrex, Commented Jun 12, 2021 at 13:45

rawrex · Accepted Answer · 2021-06-12 13:46:54Z

2

The use of sudo causing it. When you run python3 program.py you invoke it in your $USER environment setup.

You can remove Defaults !env_reset from sudoers. Or to add Defaults env_keep += "PYTHONPATH".

But I would assert that you can do it without sudo in the first place.

#!/bin/bash
cd /home/pi/pythoncodefolder
date >> logs
python3 test.py >> logs

Also, that's probably a (not exact) duplicate.

answered Jun 12, 2021 at 13:46

rawrex

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1 Comment

Yeah, removing sudo solved the problem. Thanks.