Add makefile for python project

Makefile_python/Makefile

@@ -0,0 +1,32 @@
+#NIH: https://ricardoanderegg.com/posts/makefile-python-project-tricks/
+
+SHELL := bash
+.SHELLFLAGS := -eu -o pipefail -c
+# .DELETE_ON_ERROR:
+MAKEFLAGS = --warn-undefined-variables
+MAKEFLAGS += --no-builtin-rules
+
+
+# Override PWD so that it's always based on the location of the file and **NOT**
+# based on where the shell is when calling `make`. This is useful if `make`
+# is called like `make -C <some path>`
+PWD := $(realpath $(dir $(abspath $(firstword $(MAKEFILE_LIST)))))
+
+WORKTREE_ROOT := $(shell git rev-parse --show-toplevel 2> /dev/null)
+
+
+# Using $$() instead of $(shell) to run evaluation only when it's accessed
+# https://unix.stackexchange.com/a/687206
+py = $$(if [ -d $(PWD)/'.venv' ]; then echo $(PWD)/".venv/bin/python3"; else echo "python3"; fi)
+pip = $(py) -m pip
+
+.DEFAULT_GOAL := help
+.PHONY: help
+help: ## Display this help section
+	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z\$$/]+.*:.*?##\s/ {printf "\033[36m%-38s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
+
+.venv: requirements.txt  ## Build the virtual environment
+	$(py) -m venv .venv
+	$(pip) install -U pip setuptools wheel build
+	$(pip) install -U -r requirements.txt
+	touch .venv