For this problem, you are given a mostly-working version of the Friend and FriendsDB classes from hw6 and hw7, and we will add new method to FriendsDB -- group_friends_by_food. group_friends_by_food returns a dictionary mapping from each of the favorite foods enjoyed by any friend to a list of the friends who enjoy that food, sorted in alphabetical order. (You can use the friends_who_love method to generate these lists.) A sample run should look like this:| >>» friend1 = Friend("sarah", 165)>>> friend1.add_favorite_food ("strawberries")>>> friend2 = Friend("dweezil", 175)>>> friend2.add_favorite_food("pizza")>> friend3 = Friend("bimmy", 60)>>> friend3.add_favorite_food ("pizza")>>> friend3.add_favorite_food ("strawberries")>>> db = FriendsDB ()>> db.add_friend (friend1)>> db.add_friend (friend2)>>> db.add_friend (friend3)>> db.group_friends_by_food (){'strawberries': ['bimmy', 'sarah'], 'pizza': ['bimmy', 'dweezil']}

Algorithm: 1.define a class called Friend 2.In the Friend class define add_favorite_food method with…

Answered: For this problem, you are given a…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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For this problem, you are given a mostly-working version of the Friend and FriendsDB classes from hw6 and hw7, and we will add new method to FriendsDB -- group_friends_by_food. group_friends_by_food returns a dictionary mapping from each of the favorite foods enjoyed by any friend to a list of the friends who enjoy that food, sorted in alphabetical order. (You can use the friends_who_love method to generate these lists.)

A sample run should look like this:
| >>» friend1 = Friend("sarah", 165)
>>> friend1.add_favorite_food ("strawberries")
>>> friend2 = Friend("dweezil", 175)
>>> friend2.add_favorite_food("pizza")
>> friend3 = Friend("bimmy", 60)
>>> friend3.add_favorite_food ("pizza")
>>> friend3.add_favorite_food ("strawberries")
>>> db = FriendsDB ()
>> db.add_friend (friend1)
>> db.add_friend (friend2)
>>> db.add_friend (friend3)
>> db.group_friends_by_food ()
{'strawberries': ['bimmy', 'sarah'], 'pizza': ['bimmy', 'dweezil']}

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