This error means pip is not installed or not in your system PATH. pip is the Python package manager and must be installed to manage packages.
Fixes How to fix 'pip: command not found' in Python
# How to fix 'pip: command not found' in Python
pip is a command-line tool installed as part of Python or separately. When you type 'pip' in your terminal, the operating system searches your PATH directories for an executable named 'pip'. If pip is not installed or not in PATH, the command is not found.
Review the error message above and identify which cause applies to your situation. Run additional diagnostics if needed.
Follow the corresponding solution from the causes section above.
Once you've addressed the root cause, try running 'pip install' again.