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Python Functional Python The Lambda Lambada Reduce

Posted by Kay Pengelly
Kay Pengelly
5,985 Points

Combining reduce and add in functional python

Hi there,

I don't know why this code isn't passing the test - I'm being told that this is not the correct use for reduce, add, product_sales and prices however when I run this in Pycharm it works.

Could someone please help me out here?

prices.py 
from operator import add
from functools import reduce

prices = [
    (6.99, 5),
    (2.94, 15),
    (156.99, 2),
    (99.99, 4),
    (1.82, 102)
]

def product_sales(tpl):
    return tpl[0] * tpl[1]

total = reduce(add, (map(product_sales, prices)))

1 Answer

volhaka
volhaka
9,837 Points
volhaka
volhaka
9,837 Points

reduce ( function, sequence)

you have extra parenthesis

Kay Pengelly
Kay Pengelly
5,985 Points

Thank you!