如何检查给定的Python字符串是否是另一个字符串的子字符串?(复制)

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这个问题已经有了答案:

• Does Python have a string 'contains' substring method? 14 answers
• Python有一个字符串“contains”子字符串方法吗?14个答案

I have two strings and I would like to check whether the first is a substring of the other. Does Python have such a built-in functionality?

我有两个字符串，我想检查第一个是否是另一个的子字符串。Python有这样的内置功能吗?

3 个解决方案

#1

Try using in like this:

试着这样使用:

>>> x = 'hello'
>>> y = 'll'
>>> y in x
True

#2

Try

试一试

isSubstring = first in theOther

#3

string.find("substring") will help you. This function returns -1 when there is no substring.

string.find(“字符串”)将帮助你。当没有子字符串时，该函数返回-1。