Function default parameters in Python

In Python, a function is an important programming construct that allows us to encapsulate a piece of reusable code and receive different inputs through parameters. When defining a function, we can provide default values ​​for parameters, and these default values ​​can be omitted when calling the function. This article will detail the default parameters in Python and provide corresponding source code examples.

The default parameters of a function refer to the preset values ​​provided for the parameters when the function is defined. When the function is called, if no actual value is provided for this parameter, the default value will be used instead. This is useful for parameters that use the same value in most cases.

Here is a simple example showing how to define a function with default parameters in Python:

def greet(name, message="Hello"):
    print(message, name)

greet("Alice"