How to fix ModuleNotFoundError: No module named 'multidict'

ModuleNotFoundError: No module named 'multidict'
Recommended: Install via pip into your active environment.
python -m pip install multidict

Verification

Command
python -c "import multidict; print(multidict.__version__)"
Expected output
Success! multidict version x.y.z (e.g., 2.4.0)