exception.txt

 Traceback (most recent call last):
   File "main.py", line 1751, in <module>
     game.run()
   File "/home/pviktori/dev/pyweek-entry/024-others/the-rule/__venv__/lib64/python3.6/site-packages/kivy/app.py", line 828, in run
     runTouchApp()
   File "/home/pviktori/dev/pyweek-entry/024-others/the-rule/__venv__/lib64/python3.6/site-packages/kivy/base.py", line 504, in runTouchApp
     EventLoop.window.mainloop()
   File "/home/pviktori/dev/pyweek-entry/024-others/the-rule/__venv__/lib64/python3.6/site-packages/kivy/core/window/window_sdl2.py", line 663, in mainloop
     self._mainloop()
   File "/home/pviktori/dev/pyweek-entry/024-others/the-rule/__venv__/lib64/python3.6/site-packages/kivy/core/window/window_sdl2.py", line 405, in _mainloop
     EventLoop.idle()
   File "/home/pviktori/dev/pyweek-entry/024-others/the-rule/__venv__/lib64/python3.6/site-packages/kivy/base.py", line 339, in idle
     Clock.tick()
   File "/home/pviktori/dev/pyweek-entry/024-others/the-rule/__venv__/lib64/python3.6/site-packages/kivy/clock.py", line 581, in tick
     self._process_events()
   File "kivy/_clock.pyx", line 367, in kivy._clock.CyClockBase._process_events (/tmp/pip-build-_mdcnh_v/kivy/kivy/_clock.c:7700)
   File "kivy/_clock.pyx", line 397, in kivy._clock.CyClockBase._process_events (/tmp/pip-build-_mdcnh_v/kivy/kivy/_clock.c:7577)
   File "kivy/_clock.pyx", line 395, in kivy._clock.CyClockBase._process_events (/tmp/pip-build-_mdcnh_v/kivy/kivy/_clock.c:7498)
   File "kivy/_clock.pyx", line 167, in kivy._clock.ClockEvent.tick (/tmp/pip-build-_mdcnh_v/kivy/kivy/_clock.c:3483)
   File "main.py", line 1539, in <lambda>
     append(Clock.schedule_once(lambda *a: self.add_enemy(CarRed(self, 0, 10)), i * 4 + 1))
   File "main.py", line 1607, in add_enemy
     self.tile_map.add_widget(enemy)
   File "/home/pviktori/dev/pyweek-entry/024-others/the-rule/__venv__/lib64/python3.6/site-packages/kivy/uix/widget.py", line 533, in add_widget
     widget.parent = parent = self
   File "kivy/properties.pyx", line 478, in kivy.properties.Property.__set__ (/tmp/pip-build-_mdcnh_v/kivy/kivy/properties.c:5572)
   File "kivy/properties.pyx", line 516, in kivy.properties.Property.set (/tmp/pip-build-_mdcnh_v/kivy/kivy/properties.c:6405)
   File "kivy/properties.pyx", line 571, in kivy.properties.Property.dispatch (/tmp/pip-build-_mdcnh_v/kivy/kivy/properties.c:7105)
   File "kivy/_event.pyx", line 1225, in kivy._event.EventObservers.dispatch (/tmp/pip-build-_mdcnh_v/kivy/kivy/_event.c:14035)
   File "kivy/_event.pyx", line 1131, in kivy._event.EventObservers._dispatch (/tmp/pip-build-_mdcnh_v/kivy/kivy/_event.c:13193)
   File "main.py", line 1273, in on_parent
     p = self.game.tile_map.get_path((self.co_x, self.co_y), (16, self.co_y - 1))
   File "main.py", line 934, in get_path
     distances.sort(lambda x, y: cmp(x.h_distance(self.tiles[target]), y.h_distance(self.tiles[target])))
 TypeError: must use keyword argument for key function