Recovered lost code from other libraries

bash/init_pyenv.sh

@@ -0,0 +1,31 @@
+init_pyenv(){
+	vtuple="(${1//./, })";
+	python3 -c "import sys; exit(sys.version_info <= ($vtuple))";
+	pyvok=$?;
+
+	if [ $pyvok -eq 1 ]; then
+		add-apt-repository -y ppa:deadsnakes/ppa
+		apt-get update
+		apt-get -y install "python$1" "python$1-venv"
+		"python$1" -m venv .env
+	else
+		python3 -m venv .env
+	fi;
+
+	source .env/bin/activate;
+
+	if [ -z "$2" ]; then
+		reqfile="requirements.txt";
+	else
+		reqfile="$2";
+	fi
+
+	if [ -z "$3" ]; then
+		piplog="/dev/null";
+	else
+		piplog="$3";
+	fi
+
+	pip install -r "$reqfile" >> "$piplog";
+	echo "PIP status: $?" >> "$piplog";
+}