code: def normalizeY(value):
      
      if not isinstance(value, (int, float)):
          raise TypeError("Y coordinates must be instances of "
                          ":ref:`type-int-float`, not %s."
                          % type(value).__name__)
      return value
docs: Normalizes y coordinate.
  
      * **value** must be an :ref:`type-int-float`.
      * Returned value is the same type as the input value.