          if self.vehicle is not None:
              return False
          return vehicle.can_fit_in_spot(self)
  
      def park_vehicle(self, vehicle):  # ...
      def remove_vehicle(self):  # ... 
</s> remove         # ...
 </s> add         pass </s> remove     def notify_call_escalated(self, call):  # ...
    def notify_call_completed(self, call):  # ...
    def dispatch_queued_call_to_newly_freed_employee(self, call, employee):  # ... </s> add  </s> remove     def shuffle(self):  # ... </s> add  </s> remove         # ...
 </s> add         pass </s> remove         # ...
 </s> add         pass
          if self.vehicle is not None:
              return False
          return vehicle.can_fit_in_spot(self)
  


keep keep keep keep replace replace
 Convert all .py files to be valid Python (#98) 
solutions/object_oriented_design/parking_lot/parking_lot.py