I tried to program something that makes the camera look at the mouse for one of my games, but it keeps giving this error on line.7:

Python.001(Camera), Python script error
Traceback (most recent call last):
  File "Look.py", line 7, in <module>
KeyError: 'requested item "Mouse" does not exist'
Blender Game Engine Finished

The code on line.7 is this: ms = c.sensors["Mouse"]

c is the "currentcontroller" variable that I'm currently using.

I've watched tutorials and all of them give me this same error.


1 Answer 1


Hello and welcome to BlenderStackExchange,

The Mouse string is a reference to a Mouse sensor with type Movement for receiving mouselook input.

Your setup should look like this:

enter image description here

  • $\begingroup$ thanks that helped :) $\endgroup$
    – beware4
    Sep 12, 2021 at 1:41
  • $\begingroup$ Glad I was able to help. If my post seems to be the answer, please consider marking it as the thread solution. $\endgroup$
    – RPaladin
    Sep 13, 2021 at 16:57

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