subplot accepts a tuple in other places, so I would have
> expected the same behaviour here. Is this a bug that is
> fixed in a newer matplotlib version, in which case I will
> try to upgrade. Or, is there some other way to do my code
> that will work?
You need to either do
tup = 10,1,1
subplot does not accept a tuple: it either accepts and integer, eg
num = 311
or three args: numrows, numcols, num
python let's you "unpack" tuple with the "*" operator.