Shulou(Shulou.com)06/01 Report--

Editor to share with you python how to execute the code before the program exit tips, I believe that most people do not understand, so share this article for your reference, I hope you will learn a lot after reading this article, let's go to know it!

Tips for executing code before the program exits

With the built-in module atexit, you can easily register and exit features.

No matter where you cause the program to crash, it performs the functions you have registered. Examples are as follows:

The results are as follows:

If the clean () function has parameters, you can call atexit.register (clean_1, parameter 1, parameter 2, parameter 3 = "xxx") without a modifier.

You may have other ways to deal with this requirement, but it is more elegant, more convenient, and easier to extend than not using atexit.

However, there are still some limitations to using atexit, such as:

If the program is killed by an unprocessed system signal, the registered function will not perform properly.

If a serious Python internal error occurs, the function you registered cannot be executed properly.

If os._exit () is called manually, the registered function cannot be performed properly.

The above is all the contents of this article entitled "Tips on how to execute Code before python exits". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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.