Merge pull request #2245 from cadusk/p3

python3 clean updated.

plugins/python/python.plugin.zsh

@@ -6,6 +6,7 @@ alias pyfind='find . -name "*.py"'
 function pyclean() {
     ZSH_PYCLEAN_PLACES=${*:-'.'}
     find ${ZSH_PYCLEAN_PLACES} -type f -name "*.py[co]" -delete
+    find ${ZSH_PYCLEAN_PLACES} -type d -name "__pycache__" -delete
 }
 
 # Grep among .py files