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What do *args and **kwargs mean?

Q: What do *args and **kwargs mean?

`*args` collects extra positional arguments into a tuple; `**kwargs` collects extra keyword arguments into a dict. They let functions accept a variable number of arguments and are also used to **unpack** iterables/dicts into a call: `f(*list, **dict)`.

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Explain variadic arguments.

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*args collects extra positional arguments into a tuple; **kwargs collects extra keyword arguments into a dict. They let functions accept a variable number of arguments and are also used to unpack iterables/dicts into a call: f(*list, **dict).

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PYPacking in the definition, unpacking at the call

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