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Passing 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
Steven Parker218,812 Points
Python 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