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

This article mainly introduces "how to use python mandatory keyword parameters". In daily operation, I believe many people have doubts about how to use python mandatory keyword parameters. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to use python mandatory keyword parameters". Next, please follow the editor to study!

Description

Keyword-Only Arguments means that you must specify a parameter name, that is, a keyword, when passing parameters to a function.

Example

Definition of general functions and methods of passing parameters:

Def main (arg1, arg2): print (arg1, arg2) main (1,2) main (arg1=1, arg2=2)

Definition:

The main function defines two parameters, arg1 and arg2.

Pass parameters:

You can pass parameters directly or by specifying a parameter name (keyword).

Definition of functions with mandatory keyword parameters and how to pass parameters:

Def main (arg1, *, arg2): print (arg1, arg2) main (1, 2) # wrong way to pass parameters (will report errors) main (1, arg2=2) # correct way to pass parameters

Definition:

The main function defines a general parameter arg1 and a mandatory keyword parameter arg2.

Pass parameters:

The parameters before the asterisk are general parameters, which can be passed directly, or you can specify the parameter name, that is, the keyword parameter, but the parameters after the asterisk are mandatory keyword parameters, so you must pass the parameter by specifying the parameter name!

At this point, the study of "how to use python mandatory keyword parameters" 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.