Code snippet for basic Pagination logic in python

Python Pagination

START, END, WINDOW = 0, 15, 5

def pages(page):
    start = page - WINDOW/2
    end = page + WINDOW/2

    if start >= START and end <= END:
        return range(start, end+1)

    if start <= START:
        start = START
	end = START + WINDOW

    if end >= END:
        start = END - WINDOW
        end = END

    return range(start, end)

for i in range(END):
    print i, pages(i)

# Output
"""
0 [0, 1, 2, 3, 4]
1 [0, 1, 2, 3, 4]
2 [0, 1, 2, 3, 4]
3 [1, 2, 3, 4, 5]
4 [2, 3, 4, 5, 6]
5 [3, 4, 5, 6, 7]
6 [4, 5, 6, 7, 8]
7 [5, 6, 7, 8, 9]
8 [6, 7, 8, 9, 10]
9 [7, 8, 9, 10, 11]
10 [8, 9, 10, 11, 12]
11 [9, 10, 11, 12, 13]
12 [10, 11, 12, 13, 14]
13 [11, 12, 13, 14, 15]
14 [10, 11, 12, 13, 14]
"""