Problem

If a list is introduced to cm.ScalarMappable.set_array() method, no error is raised and, nevertheless, probably an error will be raised.

At least, it's raised when using collections:

AttributeError: 'list' object has no attribute 'ndim'

Proposed solution

I think it could be great to add a data type check when data is introduced to this method Although the own name of the method means that the enter data-type must be a numpy array, I think it could be less messy if an exception (or something similar) would be added within this method.

Additional context and prior art

No response