What are common mistakes with type hints in Python?
An example of an AI chatbot conversation about common mistakes with type hints in Python.
What are common mistakes with type hints in Python?
Some common mistakes include using incorrect types, not using type hints at all, and confusing optional types.
Can you give an example of using incorrect types?
Sure! A common mistake is using 'List' instead of 'list' for type hints. 'List' needs to be imported from 'typing'.
What about optional types? How do I use them correctly?
You can use 'Optional' from 'typing' to indicate that a variable can be of a specified type or None. For example, 'Optional[int]' means it can be an int or None.
Are there any tools to help check type hints?
Yes! Tools like mypy can help you check for type hint correctness and catch potential issues in your code.
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