python typing syntax
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python is a dynamically typed language, which means that you don't have to explicitly declare the data type of a variable. however, starting from python 3.5, the language introduced optional static typing through the typing module. this allows you to add type hints to your code, providing better documentation, enabling code editors to offer more accurate suggestions, and allowing tools like mypy to perform static type checking.
in this tutorial, we'll explore the basics of python typing syntax using type hints.
type hints are not enforced at runtime, but they provide information to developers and tools about the expected types of variables, function parameters, and return values.
let's start with some basic types:
you can also add type hints to lists and tuples:
type hints are particularly useful for function parameters and return types:
you can use the optional type from the typing module to indicate that a variable can be none:
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