Creating a python class that moves Mira¶

I have the same problem as @apurva.mramdham 's problem but after the system was updated.
I still get the error " TypeError: unsupported operand type(s) for /: ‘NoneType’ and ‘float’ " .could you help me solve it.


It seems that one of the elements in the decision is not getting a vaue, You should here print to see which one is it and check why isn’t it getting a value: id it atopic value or you are note initialising it?