Learn Functional Programming in Python/

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Unpacking an Iterable

Unpacking an Iterable

Learn how to unpack an iterable into a parameter list or a sequence using the * operator.

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Unpacking an iterable to a parameter list

Here is a simple function that multiplies three numbers:

def mult3(a, b, c): 
    return a*b*c 

x = mult3(2, 3, 5) # 30

Suppose the arguments you needed were already in a list. You can use the unpacking operator, *, to “unpack” the values, as shown below.

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Python 3.8
def mult3(a, b, c): 
    return a*b*c 
p = [2, 3, 5] 
x = mult3(*p) # equivalent to mult3(2, 3, 5)
print(x)

In this case, *p is equivalent ...