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10,282 PointsPassing tuple as argument
For the following question, why doesn't the code below work?
We have a bunch of prices and sales numbers and we need to find out our total earnings. Let's start by writing a function named product_sales that takes a single two-member tuple made up of a price and a number of units sold. product_sales should return the product of the price and the number of units.
prices = [
(6.99, 5),
(2.94, 15),
(156.99, 2),
(99.99, 4),
(1.82, 102)
]
def product_sales((price, unit)):
return price * unit
1 Answer
Steven Parker
231,072 PointsPython may not be as smart as you think.
It's a clever idea, but I don't think Python supports destructuring in parameters. Instead, try using a single variable name to represent the passed tuple. Then, in the function you can use subscripting (using the "[]" operator) to select specific elements of the tuple. Or you can just unpack the tuple on a separate line:
price, unit = passed_tuple