$ git clone https://github.com/pyenv/pyenv.git ~/.pyenv $ echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc $ echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc $ echo 'eval "$(pyenv init -)"' >> ~/.bashrc $ exec "$SHELL" $ pyenv install 3.8.5 $ pyenv versions $ pyenv global 3.8.5 $ pyenv global 3.8.5 $ pip install requests