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Intermediate Python Techniques

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Python Function Arguments: Overview of Parameters and Arguments

First of all, let`s learn what positional, keyword, and optional arguments are.

python
def add(a, b, c):
    return a + b + c

The example above uses positional arguments. If you pass a different number of arguments, an error will occur. To call the function add(1, 2, 3), you just pass the arguments by their positions. The positional argument is a mandatory one.

python
add(b=2, c=3, a=1)

Also, you can pass arguments using names. And there are keyword arguments. In this case, you do not need to follow the order of the arguments.

def add(a, b, c = 0):
return a + b + c
print(add(1, 2))
print(add(1, 2, 3))

              
1234

            
def add(a, b, c = 0):
    return a + b + c
print(add(1, 2))
print(add(1, 2, 3))
copy

After giving a default value to the argument, it becomes an optional one. So, you may pass it, and if not, the function will use the default value.

question mark

Chose right names to correspond arguments.

def multiply(a, b, c = 1)
return a * b * c

Select the correct answer

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