Manjaro was not happy with me using pip
globally without a virtual environment, so I had to find out myself how to create one and use it. The following is for future reference.
mkdir -p $HOME/.venvs # create a directory for your virtual environments
python3 -m venv $HOME/.venvs/MyExampleEnvironment # create an environment named MyExampleEnvironment
$HOME/.venvs/MyEnv/bin/python -m pip install package-name
source $HOME/.venvs/MyEnv/bin/activate
Taken from: Stack Overflow post answer
Reference: Python docs guide for virtual environments