Add python scripts

python-setup/install_tools.sh

@@ -0,0 +1,31 @@
+#!/bin/sh
+set -x
+set -e
+
+# The binaries for packages installed with `pip install --user` are not available on PATH
+# by default, so we fix up PATH to suppress warnings by pip. This also needs to be done by
+# any script that needs to access poetry/pipenv.
+#
+# Using `::add-path::` from the actions toolkit is not enough, since that only affects
+# subsequent actions in the current job, and not the current action.
+export PATH="$HOME/.local/bin:$PATH"
+
+python2 -m pip install --user --upgrade pip setuptools wheel
+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
+
+# venv is required for installation of poetry or pipenv (I forgot which)
+sudo apt-get install -y python3-venv
+
+# We're install poetry with pip instead of the recommended way, since the recommended way
+# caused some problem since `poetry run` gives output like:
+#
+#     /root/.poetry/lib/poetry/_vendor/py2.7/subprocess32.py:149: RuntimeWarning: The _posixsubprocess module is not being used. Child process reliability may suffer if your program uses threads.
+#       "program uses threads.", RuntimeWarning)
+#     LGTM_PYTHON_SETUP_VERSION=The currently activated Python version 2.7.18 is not supported by the project (^3.5). Trying to find and use a compatible version. Using python3 (3.8.2) 3
+
+python3 -m pip install --user poetry pipenv