message: Install Python 3 tools before installing Python 2 tools.
diff: @@ -10,16 +10,11 @@ set -e
  # subsequent actions in the current job, and not the current action.
  export PATH="$HOME/.local/bin:$PATH"
  -# The Ubuntu 20.04 GHA environment does not come with a Python 2 pip
  -curl https://bootstrap.pypa.io/get-pip.py --output get-pip.py
  -python2 get-pip.py
  -
  -python2 -m pip install --user --upgrade pip setuptools wheel
  +# Setup Python 3 dependency installation tools.
  python3 -m pip install --user --upgrade pip setuptools wheel
  # virtualenv is a bit nicer for setting up virtual environment, since it will provide up-to-date versions of
  # pip/setuptools/wheel which basic `python3 -m venv venv` won't
  -python2 -m pip install --user virtualenv
  python3 -m pip install --user virtualenv
  # We install poetry with pip instead of the recommended way, since the recommended way
  @@ -32,3 +27,14 @@ python3 -m pip install --user virtualenv
  # poetry 1.0.10 has error (https://github.com/python-poetry/poetry/issues/2711)
  python3 -m pip install --user poetry!=1.0.10
  python3 -m pip install --user pipenv
  +
  +if command -v python2 &> /dev/null; then
  + # Setup Python 2 dependency installation tools.
  + # The Ubuntu 20.04 GHA environment does not come with a Python 2 pip
  + curl https://bootstrap.pypa.io/get-pip.py --output get-pip.py
  + python2 get-pip.py
  +
  + python2 -m pip install --user --upgrade pip setuptools wheel
  +
  + python2 -m pip install --user virtualenv
  +fi
  