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Maybe you'll remember the len function and the isinstance function.

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The len function takes only one

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argument, and the isinstance functioniyou saw it  takes two

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arguments. You can also see that in the help

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documentation, so obj, that's the only

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argument that length takes.

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[Author typing]

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And if you look at

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this isinstance, it will get objand class_or_tuple.

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So functions needs 1 arguments, something

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needs 2. Now these 2 functions were built in

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Python functions. So the Python developers team

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designed this functions. So how can we make our

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own functions with multiple arguments? Pretty

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easy. Let's say we want some area function that

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calculates the area of a rectangle. To have more

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than one argument, you just need to separate the

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parameters with a comma. So parameter and

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arguments. A parameter is what we refer to these

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variables when we are defining the function. And

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when we call the function like here, we refer to

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them as arguments in the function call site, so to say.

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[Author typing]

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So return a * b, that will return the area

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for rectangle. And of course, when you call the

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function, you just pass the values for those arguments.

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[Author typing]

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And you get the value output correctly.

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[Outro sound]