chore(testing): Installed tox for python versions 3.8 to 3.11

Makefile

@@ -54,6 +54,24 @@ test:
 	poetry run pytest 
 	@echo "Done."
 
+test_all:
+	@echo "Testing with python3 versions 3.8 and up..."
+	@echo "This may take a while..."
+	tox run-parallel
+
+#########
+# Setup #
+#########
+install_py_versions:
+	@echo "Installing python 3.8 and up..."
+ifeq ($(OS),Windows_NT)
+	@echo "Windows detected..."
+	@echo "Please run this in Windows Subsystem for Linux (WSL)"
+else
+	@echo "Unix detected"
+	./install_py_versions.sh
+endif
+
 ##########################
 # LINTING AND FORMATTING #
 ##########################

install_py_versions.sh

@@ -0,0 +1,35 @@
+#!/bin/bash 
+
+install_python_versions() {
+  versions=("3.8" "3.9" "3.10" "3.11")
+  for version in "${versions[@]}"; do
+    echo "--------------------------------------------------"
+    echo "Installing python $version"
+    echo "--------------------------------------------------"
+    pyenv install -s "$version"
+    pyenv local "$version"
+  done
+}
+
+# Install pyenv
+if which pyenv; then
+  install_python_versions
+else
+  echo "Trying to install pyenv for you."
+  curl https://pyenv.run | bash
+
+  user_shell="$SHELL"
+
+  if echo "$user_shell" | grep -q "bash"; then
+      rc_file="$HOME/.bashrc"
+  elif echo "$user_shell" | grep -q "zsh"; then
+      rc_file="$HOME/.zshrc"
+  elif echo "$user_shell" | grep -q "fish"; then
+      rc_file="$HOME/.config/fish/config.fish"
+  else
+      echo "Unsupported shell: $user_shell"
+      exit 1
+  fi
+
+  install_python_versions
+fi