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Mike Driscoll: Python 201 ��� All About the TypedDict
- Python supports type hinting but does not enforce it, requiring external tools like Mypy.
- TypedDict allows adding type hinting to heterogeneous dictionaries with values of different types.
- Type hinting a regular dictionary involves using dict[key_type, value_type].
- Python versions before 3.9 required 'from typing import Dict' for type hinting.
- TypedDict was introduced in Python 3.8 for dictionaries with different value types.
- TypedDict helps in situations where a dictionary has values of various types.
- Using TypedDict ensures better type checking and prevents errors.
- Creating a TypedDict involves defining a class that inherits from TypedDict.
- Dealing with keys containing spaces in a TypedDict requires using TypedDict constructor instead of subclassing.
- TypedDict is useful for type-hinting complex dictionaries, even within other data structures like lists or tuples.
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