1
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Maybe you remember the len function and the isinstance function.

2
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The len function takes only one argument and the instance function you saw it takes two arguments.

3
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You can also see that in the Help documentation, so obj, that's the only argument that length takes.

4
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And if you look at isinstance it will get obj and class or tuple so some functions needs one argument,

5
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some need two, now these two functions were built in Python functions.

6
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So the python developers team designed these functions.

7
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So how can we make our own functions with multiple arguments? Pretty easy.

8
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Let's say we want an area function that calculates the area of a rectangle to have more than one argument.

9
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You just need to separate the parameters with a comma so parameter and argument, a parameter is what we

10
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refer to these variables when we are defining the function.

11
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And when we call the function like here we refer to them as arguments in the function call site.

12
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So to say.

13
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So return a times b, that will return of the area of a rectangle.

14
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And of course when you call the function you just pass values for those arguments.

15
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And you get the value output correctly.