What are the methods of python string lookup class

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.