vamseeachanta Diagnose Shebang vs Virtual Environment Import Errors
When a CLI tool fails with ModuleNotFoundError despite the package being installed, check if the shebang in /usr/local/bin/ or ~/.local/bin/ points to system Python instead of the venv Python. Verify the actual Python interpreter being used by examining the shebang (#!/usr/bin/env python3 vs /path/to/venv/bin/python3). If mismatched, update the shebang to explicitly point to the venv's Python executable. Be aware that auto-update mechanisms may revert custom shebangs—check for post-install scripts that regenerate entry points.