What are the variable parameters of Python functions?

Python function variable parameters have two types. They are *args and **kwargs respectively. Detailed introduction: 1. *args: This parameter allows the function to accept any number of positional parameters. In the function definition, *args represents a tuple that contains all positional parameters passed to the function; 2. **kwargs: This parameter allows the function to accept any number of keyword parameters. In a function definition, **kwargs represents a dictionary containing all keyword arguments passed to the function.

The operating system for this tutorial: Windows 10 system, Python version 3.11.4, Dell G3 computer.

In Python, there are two types of variable parameters: *args and **kwargs.

1. *args: This parameter allows the function to accept any number of positional parameters. In a function definition, *args represents a tuple containing all positional arguments passed to the function. For example:

def my_function(*args):
    for arg in args:
        print(arg)
my_function(1, 2, 3)

In this example, the my_function function can accept any number of positional arguments and print them out.

2. **kwargs: This parameter allows the function to accept any number of keyword parameters. In a function definition, **kwargs represents a dictionary containing all keyword arguments passed to the function. For example:

def my_function(**kwargs):
    for key, value in kwargs.items():
        print(f"{key}: {value}")
my_function(name="Alice", age=25, city="New York")

In this example, the my_function function can accept any number of keyword arguments and print them out.

These two variable parameter types enable the function to accept an uncertain number of parameters more flexibly, thus enhancing the versatility and applicability of the function.

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