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Editor to share with you what you need to pay attention to in the use of python variable length parameters, I believe most people do not know much about it, so share this article for your reference. I hope you will gain a lot after reading this article. Let's learn about it together.

Description

1. The use of variable length parameters is too flexible. The signature of the function is not clear enough, and the caller needs to take the time to know how to call this method.

For example, in the case of positional parameters and default parameters, there are variable parameters, keyword parameters, and named keyword parameters. It is easy to be inefficient in team development.

2. If the list of functions is too long, it can be simplified by using * args and * * kwargs, but it also means that the function may have a better implementation method and needs to be refactored.

Example

Def Book (book, book_list=None): print (book_list) if book_list is None: book_list= [] book_list.append (book) for book in book_list: print (book) print (id (book_list)) test1 = Book ('First one') test2 = Book (' Second one') all the contents of the article "what should be paid attention to in the use of python variable length parameters" 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!

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