Computers and Technology, 23.01.2020 18:31 atifgujar
In a dictionary whose keys are the warehouses: associated with each warehouse is an inner dictionary whose keys are the stocked products (and whose associated values are the inventory of that product in the warehouse). the inventory must always be a non-negative value; an inventory of 0 is legal. for example, a simple/small database might be.
db = {'irvine' : {'brush': 3, 'comb': 2, 'wallet': 2}, 'newport': {'comb': 7, 'stapler': 0},
'tustin' : {'keychain': 3, 'pencil': 4, 'wallet': 3}}
this data structure means that
the irvine warehouse stocks 3 brushes, 2 combs, and 2 wallets.
the newport warehouse stocks 7 combs, and 0 staplers.
the tustin warehouse stocks 3 keychains, 4 pencils, and 3 wallets.
(c) the by_store_inventory2 function returns a list of 2-tuples (str, int) (warehouse names and inventory), sorted ascending by which warehouses have the largest inventory (summed over all the products). if two warehouses store the same inventory, they should appear in ascending order of warehouse name: for the db dictionary above the result is [('irvine', 7), ('newport', 7), ('tustin', 10)].
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