查找两个字符串之间的相似性度量 [英] Find the similarity metric between two strings

问题描述

如何获得一个字符串与Python中另一个字符串相似的概率?

How do I get the probability of a string being similar to another string in Python?

我想获得一个像0.9(表示90％)之类的十进制值.最好使用标准Python和库.

I want to get a decimal value like 0.9 (meaning 90%) etc. Preferably with standard Python and library.

例如

similar("Apple","Appel") #would have a high prob.

similar("Apple","Mango") #would have a lower prob.

推荐答案

有内置的.

from difflib import SequenceMatcher

def similar(a, b):
    return SequenceMatcher(None, a, b).ratio()

使用它:

>>> similar("Apple","Appel")
0.8
>>> similar("Apple","Mango")
0.0

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