>> Thank you, everyone, for resolving my question. At one point, while >> trying to solve the problem, I typed >> >>>>> y[1,3] >> >> Traceback (most recent call last): >> File "<interactive input>", line 1, in ? >> TypeError: list indices must be integers >> >> The error message gave me no clue as to what I was doing wrong (in my >>mind, I was just writing out the elements of a range), and I thought >> perhaps that my inclusion of a comma was the problem. Perhaps a more >>explicit error message would have helped.
The error message is correct because in y[1, 3] "1, 3" is recognized by the interpreter as tuple. Python goodie or snakebite that is... -- http://mail.python.org/mailman/listinfo/python-list