How to fix ModuleNotFoundError: No module named 'pymongo'

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

Verification

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