Shulou(Shulou.com)05/31 Report--

This article mainly introduces "how to use the rindex function in python". In the daily operation, I believe that many people have doubts about how to use the rindex function in python. The editor consulted all kinds of materials and sorted out a simple and easy-to-use operation method. I hope it will be helpful to answer the doubt of "how to use the rindex function in python". Next, please follow the editor to study!

1. The rindex function is mainly used to find out whether a substring exists in a given string. If found, the first index position of the substring is returned, otherwise an exception is thrown directly.

2. Rindex starts searching from the right side of the string, but the index returned is still calculated from the left.

Example

Mystr = 'hello world and hello python' # 1. Search the entire string for print (mystr.rindex ('python')) # output result 22 # 2. Find print (mystr.rindex ('python',0,20)) # within the specified position of the string and return the result report exception: what are the advantages of ValueError:substring not foundPython? 1. It is easy to use. Compared with traditional languages such as C Java, C # and C #, Python has less strict requirements on code format.

2. Python is open source, everyone can see the source code, and it can be ported to many platforms.

3. Python is object-oriented, which can support both process-oriented programming and object-oriented programming.

4. Python is an interpretive language. Programs written by Python do not need to be compiled into binary code and can be run directly from the source code.

5. Python has powerful functions, has many modules, and can basically achieve all the common functions.

At this point, the study on "how to use the rindex function in python" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.