How to fix ModuleNotFoundError: No module named 'openai'

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

Verification

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