python-import-path-debugging

name	python-import-path-debugging
description	Diagnose ModuleNotFoundError when a package is installed but still fails to import
version	1.0.0
source	auto-extracted
extracted	"2026-04-10T00:00:00.000Z"
metadata	{"tags":["python","debugging","environment","imports"]}

Python Import Path Debugging

When a ModuleNotFoundError occurs despite the package being installed, the issue is typically a Python path/environment mismatch. Check: (1) which Python executable the CLI script uses (check shebang and which), (2) which environment has the package installed vs. which the script is executing in, (3) whether the script is using a virtual environment that differs from your active shell environment. Verify with python -c "import module; print(module.__file__)" to confirm the correct interpreter is being used.