index.py

import hashlib

def geometry(line):
    pts = ['{x:.6f} {y:.6f}'.format(x=x, y=y) for (x, y) in line]
    message = 'Geometry {}'.format(' '.join(pts))
    return generateHash(message)

def intersection(pt):
    message = 'Intersection {x:.6f} {y:.6f}'.format(x=pt[0], y=pt[1])
    return generateHash(message)

def generateHash(message):
    return hashlib.md5(message).hexdigest()

if __name__ == '__main__':
    # fixtures
    message1 = 'Intersection 110.000000 45.000000'
    message2 = 'Intersection -74.003388 40.634538'
    message3 = 'Intersection -74.004107 40.634060'
    pt1 = [110, 45]
    pt2 = [-74.003388, 40.634538]
    pt3 = [-74.004107, 40.63406]
    line1 = [[110, 45], [115, 50], [120, 55]]
    line2 = [[-74.007568359375, 40.75239562988281], [-74.00729370117188, 40.753089904785156]]
    line3 = [[-74.00778198242188, 40.72457504272461], [-74.0076675415039, 40.72519302368164]]

    # generateHash
    assert generateHash(message1) == '71f34691f182a467137b3d37265cb3b6'
    assert generateHash(message2) == '103c2dbe16d28cdcdcd5e5e253eaa026'
    assert generateHash(message3) == '0f346cb98b5d8f0500e167cb0a390266'

    # intersection
    assert intersection(pt1) == '71f34691f182a467137b3d37265cb3b6'
    assert intersection(pt2) == '103c2dbe16d28cdcdcd5e5e253eaa026'
    assert intersection(pt3) == '0f346cb98b5d8f0500e167cb0a390266'

    # geometry
    assert geometry(line1) == 'ce9c0ec1472c0a8bab3190ab075e9b21'
    assert geometry(line2) == '02aa80dc9c72ea4175bfb10c05e5a2b9'
    assert geometry(line3) == '58ae3bdd54f99e0331a8cb147557adcc'