Question

I am using a grid system to determine an object’s adjacency to another. I’m checking the relative position of the static object to the position of the movable object.

The thing I need help with is the range() function. I need to iterate over (-1, 0, 1) per dimension, so I use

range(-1, 1)

Which produces -1’s and 0’s.

Similarly,

range(-1, 2)

produces the same thing.

I thought arg1 was Start, arg2 was Stop, and optional arg3 was Step defaulted to 1. What gives?

Answer 1

I … can’t reproduce your troubles:

>>> range(-1,1)
[-1, 0]
>>> range(-1, 2)
[-1, 0, 1]

Working as expected.