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Python function parameters preceded by * asterisk what is the meaning, many novices are not very clear about this, in order to help you solve this problem, the following editor will explain in detail for you, people with this need can come to learn, I hope you can gain something.

Description

Add a * asterisk: indicates that the number of parameters is uncertain, and the passed parameters are stored as tuples.

Add two * asterisks: indicates that the number of parameters is uncertain and the parameter type is a keyword parameter, and the passed parameter is stored as a dictionary.

Example

Add an asterisk:

Def main (* args): print (args) main (1,2)''out (1,2)''

Add two * asterisks:

Def main (* * kwargs): print (kwargs) main (axi1, baux2)''out {' axie: 1, 'baked: 2}' 'extension

In addition, there is a common use of * asterisks:

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

The * here represents a placeholder, and the parameter before the asterisk can be assigned by either a parameter name or directly, but the parameter after the asterisk is a keyword parameter and must be assigned a parameter name.

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