- You use a mixin to force a function to accept an argument at runtime even if the argument wasn’t included in the function’s definition.
- You use a mixin to allow a decorator to accept keyword arguments.
- You use a mixin to make sure that a class’s attributes and methods don’t interfere with global variables and functions.
- If you have many classes that all need to have the same functionality, you’d use a mixin to define that functionality.
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