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reduce , map and add error
Finally, we're ready to find our totals. Create a variable named total. Use map() to find the per-product totals for each item in prices, then use reduce (and add) to find the total value.
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(item): return item * item add(1,2) total = reduce(add , map(product_sales,prices))
Steven Parker218,813 Points
I'm not sure why, but that space between add and the comma seems to upset the challenge checker.
Just remove that space.
You also have a stray call to add on the line above (but the checker seems to ignore that).
You might want to report this funny space issue to Treehouse Support. It may get you an Exterminator badge.