Calculating the similarity of two lists

Question

I have two lists:

eg. a = [1,8,3,9,4,9,3,8,1,2,3] and b = [1,8,1,3,9,4,9,3,8,1,2,3]

Both contain ints. There is no meaning behind the ints (eg. 1 is not \'cl

Answer 1

Unless im missing the point.

from __future__ import division

def similar(x,y):
    si = 0
    for a,b in zip(x, y):
        if a == b:
            si += 1
    return (si/len(x)) * 100


if __name__ in '__main__':
    a = [1,8,3,9,4,9,3,8,1,2,3] 
    b = [1,8,1,3,9,4,9,3,8,1,2,3]
    result = similar(a,b)
    if result is not None:
        print "%s%s Similar!" % (result,'%')