Python: Multiply all the items in a list
Python List: Exercise-2 with Solution
Write a Python program to multiply all the items in a list.
def multiply_list(items): tot = 1 for x in items: tot *= x return tot print(multiply_list([1,2,-8]))
In the above exercise -
def multiply_list(items): -> This line defines a function called “multiply_list” that takes a single argument items. This function will be used to calculate the product of all the numbers in the items list.
- tot = 1 -> This line initializes a variable called tot to 1. This will be used to keep track of the running total of the product of the numbers in the list.
- for x in items: -> This line starts a loop that will iterate over each element in the items list, one at a time.
- tot *= x -> This line multiplies the current value of x by the tot variable. This is equivalent to the shorter form tot = tot * x.
- return tot -> This line returns the final value of the tot variable after the loop has finished. This is the product of all the numbers in the items list.
print(multiply_list([1,2,-8])) -> This line calls the multiply_list() function and passes in the list [1,2,-8]. The resulting product is then printed to the console using the print function.
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