TypeError: list indices must be integers, not tuple, whats wrong [duplicate]

Answer 1

This syntax is wrong:

imheight[i,j] = hij
imheight[j,i] = hij

Perhaps you meant this?

imheight[i][j] = hij 
imheight[j][i] = hij

But then again, imheight is a one-dimensional list, but you're assuming that it's a two-dimensional matrix. It will only work if you first initialize imheight correctly:

imheight = [[0] * len(tables) for _ in range(len(tables))]

Answer 2

Not

imheight[i,j] = hij

It should be written like this:

imheight[i:j] = hij

It means the index from i to j.

Answer 3

A dictionary will get you the assignment behavior you desire:

imheight = {}

But if you later need to iterate over it in some order, this won't be as easy as if you'd done it as a proper list of lists, since dictionaries don't maintain order. However, this may work well enough.