What are type annotations in Python?
An example of an AI chatbot conversation about Python's typing module and type annotations.
What are type annotations in Python?
Type annotations in Python are a way to indicate the expected data types of variables, function parameters, and return values.
Can you give me an example of how to use type annotations?
Sure! Here's a simple example:
def add_numbers(a: int, b: int) -> int: return a + b
This function specifies that both parameters 'a' and 'b' should be integers, and it returns an integer.
Are type annotations mandatory in Python?
No, type annotations are optional in Python. They are mainly used for better code readability and to help with static type checking.
What tools can I use to check type annotations?
You can use tools like mypy, Pyright, or the built-in type checker in IDEs like PyCharm to check type annotations.
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