python define return type of function
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In Python, function return types are not explicitly declared like in some statically typed languages, but you can provide hints using type annotations. Type annotations can make your code more readable and help tools like linters and IDEs catch potential errors. In this tutorial, we'll explore how to define the return type of a function in Python using type annotations.
Let's start with a simple function that adds two numbers:
In this example:
You can use optional and union types to indicate that a function may return different types:
In this example:
For functions returning multiple values as a list or tuple, you can specify the types:
In this case:
If your function returns an instance of a custom class or a specific object, you can use the class name in the type annotation:
Here, - Point indicates that the function returns an instance of the Point class.
Type annotations in Python can enhance code readability and provide useful information to developers and tools. While Python is dynamically typed, these annotations serve as hints and can be checked using tools like mypy or integrated into your IDE for better code analysis. They are especially helpful in larger projects where clarity and maintainability are crucial.
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