Write a function called list_to_dict(lst) that takes a 2-D list of sales records of this form. [["customer1", "bread", 5], ["customer2", "bread", 4.5], ["customer1", "egg", 6.75]] Your function will store the sales information in a dictionary, where each {key:value} pair of the dictionary stores {a unique customer: [ a list of all products purchased by this customer, total cost of these products]}, and returns the dictionary. Sample run, sales = [ ["customer1", "bread", 5], ["customer2", "bread", 4.5], ["customer1", "egg", 6.75], ["customer2", "milk", 4.35], ["customer3", "egg", 3.6], ["customer4", "bread", 4.5], ["customer1", "milk", 4.35], ["customer2", "egg", 3.6], ["customer4", "milk", 4.35] ] >>> record = list_to_dict(sales) >>> display(record) customer1 : [['bread', 'egg', 'milk'], 16.1] customer2 : [['bread', 'milk', 'egg'], 12.45] customer3 : [['egg'], 3.6] customer4 : [['bread', 'milk'], 8.85
Problem 4 (2-D List to a Dictionary) Write a function called list_to_dict(lst) that takes a 2-D list of sales records of this form. [["customer1", "bread", 5], ["customer2", "bread", 4.5], ["customer1", "egg", 6.75]] Your function will store the sales information in a dictionary, where each {key:value} pair of the dictionary stores {a unique customer: [ a list of all products purchased by this customer, total cost of these products]}, and returns the dictionary.
Sample run,
sales = [ ["customer1", "bread", 5], ["customer2", "bread", 4.5], ["customer1", "egg", 6.75],
["customer2", "milk", 4.35], ["customer3", "egg", 3.6], ["customer4", "bread", 4.5],
["customer1", "milk", 4.35], ["customer2", "egg", 3.6], ["customer4", "milk", 4.35] ]
>>> record = list_to_dict(sales)
>>> display(record)
customer1 : [['bread', 'egg', 'milk'], 16.1]
customer2 : [['bread', 'milk', 'egg'], 12.45]
customer3 : [['egg'], 3.6]
customer4 : [['bread', 'milk'], 8.85]
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