List coordinates between a set of coordinates

This should be fairly开发者_高级运维 easy, but I'm getting a headache from trying to figure it out. I want to list all the coordinates between two points. Like so:

1: (1,1)
2: (1,3)
In between: (1,2)

Or

1: (1,1)
2: (5,1)
In between: (2,1), (3,1), (4,1)

It does not need to work with diagonals.

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You appear to be a beginning programmer. A general technique I find useful is to do the job yourself, on paper, then look at how you did it and translate that to a program. If you can't see how, break it down into simpler steps until you can.

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Depending on how you want to handle the edge cases, this seems to work:

def points_between(p1, p2):
    xs = range(p1[0] + 1, p2[0]) or [p1[0]]
    ys = range(p1[1] + 1, p2[1]) or [p1[1]]
    return [(x,y) for x in xs for y in ys]

print points_between((1,1), (5,1))
# [(2, 1), (3, 1), (4, 1)]

print points_between((5,6), (5,12))
# [(5, 7), (5, 8), (5, 9), (5, 10), (5, 11)]