VSCode python debug: "No module named xx" when using module attribute

Question

My Python project folder structure is as follow:

.python_practice
|--lib
    |--lib.py
    |--__init__.py
|--practice1
    |--my_module.py
    |--__init__.py
|--__init__.py

My launch configuration is

{
    "name": "Python: Module",
    "type": "python",
    "request": "launch",
    "module": "practice1.my_module",
    "console": "integratedTerminal"
 },

In my_module.py

from lib.lib import util_func

When I try to debug using VScode I get an error: "No module named practice1.my_module"

But when I run it with the following command it works fine

python -m practice1.my_module

How could I debug my code so that the relative import work?

Any help will be appreciated, thank you.

BorjaEst · Accepted Answer · 2022-03-15 09:55:10Z

19

You can try the following:

{
    "name": "Python: A name example",
    "type": "python",
    "request": "launch",
    "program": "practice1/my_module.py",
    "env": {
        "PYTHONPATH": "${workspaceFolder}"
    },
}

Using program instead of module is almost the same.
You need to solve the imports as if you had the package installed. Therfore you need to add a PYTHONPATH.

answered Mar 15, 2022 at 9:55

BorjaEst

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3 Comments

Matthias Arras Over a year ago

To find where to modfiy this, press ctrl+ shift + p and enter launch.json > click on 'Open launch.json'. Or just click on the cogwheel at the top of the run and debug side-bar. Or command pallette Run > Open Configurations.

BorjaEst Over a year ago

Additionally, if your project is installable, you should be able to pip install -e . so that it is --editable but installed and your modules accesible.

yu yang Jian Over a year ago

for multiple pythonpath, see stackoverflow.com/questions/41471578/… , for args see stackoverflow.com/questions/51244223/…

jmontenegro · Accepted Answer · 2022-09-24 17:22:32Z

6

I have ran into the same issue. You may have two Python interpreters installed and only one has the modules you need. Try selecting another Python version by running from the command pallet (Ctl+Shift+p) then python: Select Interpreter and choose where your python lives. I had:

/usr/bin/python3
/usr/local/bin/python

answered Sep 24, 2022 at 17:22

jmontenegro

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1 Comment

Sealander Over a year ago

This was it for me. I am also trying to debug inside a dev container...

ofir_aghai · Accepted Answer · 2022-12-26 15:41:00Z

4

add env variable "PYTHONPATH" point to my app folder (where my app.py exist)
fixed my problem

{
      "name": "Python: Debugging App",
      "type": "python",
      "request": "launch",
      "program": "app/app.py",
      "console": "integratedTerminal",
      "justMyCode": true,
      "env": {
        "PYTHONPATH": "${workspaceFolder}/app"
      }
},

answered Dec 26, 2022 at 15:41

ofir_aghai

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Comments

Brett Cannon · Accepted Answer · 2018-11-19 20:27:00Z

3

This is a known bug involving debugging sub-modules.

answered Nov 19, 2018 at 20:27

Brett Cannon

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