判断字符串子串数

#!/usr/bin/env python
# -*- coding: utf-8 -*-


def fn():
    strs = raw_input("Enter the string:")
    d = {}
    for i in range(len(strs)):
        for j in range(1,len(strs)):
            if strs[i]*j in strs:
                if strs[i]*j in d:
                    continue
                else:
                    d[strs[i]*j] = 1
    print len(d)

if __name__ == "__main__":
    fn()