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This article mainly introduces the python string search class method of what the relevant knowledge, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe you will have something to gain after reading this python string search class method, let's take a look at it.

1. Find and rfind look for the location of the first and last occurrence of the string, and return-1 if it does not exist.

S = "bird,fish,monkey,rabbit" s.find ('fish') # 5s.rfind (' b') # 20s.find ('tiger') #-1

2. When looking for index and rindex, an exception is thrown if it does not exist.

S = "bird,fish,monkey,rabbit" s.index ('bird') # 0s.rindex (' i') # 21s.index ('tiger') # specified string does not exist substring not found

3. Count returns the number of times a string appears in another string, or 0 if it does not exist.

S = "bird,fish,monkey,rabbit" s.count ('bird') # 1s.count (' b') # 3s.count ('tiger') # 0 this is the end of the article on "what are the ways to find classes for python strings". Thank you for reading! I believe that everyone has a certain understanding of the knowledge of "what are the methods of python string search class". If you want to learn more, you are welcome to follow the industry information channel.

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