ref: re-enable pyc files now that we're on python 3 (#35678)

.envrc

@@ -113,9 +113,6 @@ show_commands_info() {
 
 commands_to_run=()
 
-# don't write *.pyc files; using stale python code occasionally causes subtle problems
-export PYTHONDONTWRITEBYTECODE=1
-
 # Always write stdout immediately. Very helpful for debugging
 export PYTHONUNBUFFERED=1