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This article introduces the relevant knowledge of "what function parameters does Python have". Many people will encounter such a dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Function parameter matching table syntax position interpretation func (value) caller general parameters: match func (name=value) caller keyword parameters: match func (* sequence) caller by variable name pass all objects in name, and as independent location-based parameters func (* * dict) callers pass all keywords / values in name pairs And as an independent keyword parameter def func (name) function general parameter: match the default parameter value of the def func (name=value) function by position or variable name If not passed in the call, the def func (* name) function matches and collects (in tuples) all parameters containing position def func (* * name) function matches and collects (in the dictionary) all parameters containing position def func (* args, name) function parameters must be passed in the call by keyword def func (*, name=value) function Python 3.0II, parameter order

In a function call, parameters must appear in this order: any unknown parameter (value), followed by any keyword argument (name=value) and * sequence form combination, followed by * * dict form

At the head of the function, the parameters must appear in this order: any general parameter (name), followed by any default parameter (name=value), if any, followed by * name (or * in Python 3.0), followed by any name or name=value keyword-only parameter (in Python 3.0), followed by * * name.

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