python.md

Update System

• sudo apt-get update
• sudo apt-get install emacs

Pyenv

• git clone https://github.com/pyenv/pyenv.git ~/.pyenv
• echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.profile
• echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.profile
• echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n eval "$(pyenv init -)"\nfi' >> ~/.profile
• log out and back in
• install build dependencies from: https://github.com/pyenv/pyenv/wiki
  • sudo apt-get update; sudo apt-get install --no-install-recommends make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev
• pyenv install --list
• pyenv install 3.7.3
• pyenv global 3.7.3
• python --version
  • should show 3.7.3
• mkdir -p ~/work/coral
• cd ~/work/coral
• pyenv local 3.7.3

Pipenv

• pip install --user pipenv
• if you receive this warning:

You are using pip version 19.0.3, however version 19.2.3 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

• upgrade pip: pip install --upgrade pip

• add pipenv to PATH in ~/.bash_profile
  • export PIPENV_BIN="$HOME/.local/bin"
  • export PATH="$PIPENV_BIN:$PATH"
• cd ~/work/coral
• if python global is set to 3.7.3
  • pipenv --python `which python`
• Note this message:
  • New python executable in /home/pi/.local/share/virtualenvs/coral-xi0Qt4P-/bin/python
• pipenv shell