Question

I am trying to use

__getitem__(self, x, y):

on my Matrix class, but it seems to me it doesn’t work (I still don’t know very well to use python).
I’m calling it like this:

print matrix[0,0]

Is it possible at all to use more than one argument? Thanks. Maybe I can use only one argument but pass it as a tuple?

Answer 1

__getitem__ only accepts one argument (other than self), so you get passed a tuple.

You can do this:

class matrix:
    def __getitem__(self, pos):
        x,y = pos
        return "fetching %s, %s" % (x, y)

m = matrix()
print m[1,2]

outputs

fetching 1, 2

See the documentation for object.__getitem__ for more information.