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nopcoder
8,605 PointsWhat is the correct use of map, add, reduce and product
Python IDE returns the in my opinion correct result of the requested challenge step which is a total of 978.63, right? Answer: Didn't find the correct use of reduce, map, add and product_sales. Why?
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(items):
return items[0] * items[1]
total = reduce(add, (map(product_sales, prices)))
3 Answers
nopcoder
8,605 PointsOkay found it. I used unneccessary paranthesis around the map statement for the add function.
Parsenz Dev
13,198 PointsTake out the extra parentheses you've got around the map function. The last line should read:
total = reduce(add, map(product_sales, prices))
nopcoder
8,605 PointsThanks.