I have a python script that, when opened in VSCode or any other code editor, fails to import the arch package. After making sure that it was downloaded and that I wasn’t running in any virtual environment, I tried running the script from terminal with python ./file.py. To my surprise, no error was reported and the segment of code which relied on the arch package ran as expected.

I first tried downloading with conda, then pip, and then finally using pip to download the package directly from git. Not sure if this is important, but running pip list --format=freeze showed that my arch version was 0.0.0 until I downloaded directly from git, where it now displays arch==7.0.1.dev6+g9ced09e. The issue still persists, however.

Any thoughts on where this discrepancy may come from, or how I can go about figuring it out?

Line from my script:
from arch import arch_model

Error message:
Unable to import 'arch' (import-error)

Expectation:
Import would succeed and I would be able to employ the package. This result is achieved when I run python ./file.py from terminal.