The package that exists in the wrong environment

Diagnose why the import fails and repair the project without using a global install.

12 min/Traceback reading / pip / virtual environments

Observe

Investigate

Fix

Verify

Reflect

requirements.txt/text

0102

# dependencies for checkout
# add the project packages here

Terminal0 runs

Traceback (most recent call last):
  File "checkout.py", line 1, in <module>
    import requests
ModuleNotFoundError: No module named 'requests'

Simulator: the active interpreter has no requests package.