Add python virtualenv functions

runcoms/zshrc

@@ -34,6 +34,14 @@ func batt() {
   echo "power: $(cat $BAT_DIR/power_now)"
 }
 
+func mkvirtualenv() {
+  virtualenv ~/.venvs/$1
+}
+
+func workon() {
+  . ~/.venvs/$1/bin/activate
+}
+
 func pan() {
   python -c "import $1; help($1)"
 }