Python function parameters default and then a list смотреть онлайн

In Python, functions are blocks of reusable code that perform specific tasks. They are a fundamental part of any programming language and help in organizing code, making it more modular and easier to understand. In this tutorial, we will explore Python functions, their parameters, and default values.
A function in Python is a block of code that performs a specific task when called. Functions are defined using the def keyword, followed by a name for the function and a pair of parentheses. Here's a basic function definition:
You can call this function by simply writing its name followed by parentheses:
This will print "Hello, World!" to the console.
Functions can accept input data, called parameters or arguments, which are passed within the parentheses when the function is called. Parameters allow functions to be more flexible and versatile. Let's create a function that takes a name as a parameter and prints a personalized greeting:
Output:
In this example, the name parameter is used to customize the greeting message.
Python allows you to specify default values for parameters. This means that if an argument is not provided when calling the function, the default value is used. Default values are specified in the function definition. Here's an example:
Output:
In this case, if no name is provided when calling the function, it defaults to "World."
Let's create a more complex function that calculates the area of a rectangle. It will accept the width and height as parameters, with default values for each:
Output:
In this example, the function calculate_rectangle_area can handle various cases, thanks to default parameter values.
Functions are a vital concept in Python for code organization and reusability. They can accept parameters and have default values for those parameters, making them versatile and adaptable to different use cases. Understanding functions and their parameters is crucial for writing clean and maintainable Python code.
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