→ Part 4: Order Up! Complete the function order lunches, which takes two arguments: • stock: A dictionary that contains menu items available for purchase at a restaurant. The dictionary maps each item's name to an integer that represents how many of each item is available (e.g., * soda”: 4). • orders: A list of strings representing items that patrons at the restaurant have ordered. The list might include items not available for purchase. The function iterates over the orders list, treating each string in the list as a key in the stock dictionary. If the key is present in the dictionary, the function decrements the value associated with the key (provided that doing so would not make the value negative). The function also returns the total number of valid items purchased (as an integer). The function simply ignores strings in orders that are not valid keys in stock. As an example, suppose stock were the dictionary {soda': 0, burger: 3, 'chips": 5, "pizza': 7} and orders were [soda, sandwich”, burger", 'pizza', 'pizza', burger', 'pretzels'] The function would update stock to {soda': 0, burger': 1, chips": 5, "pizza': 5} and return 4.

→ Part 4: Order Up! Complete the function order lunches, which takes two arguments: • stock: A dictionary that contains menu items available for purchase at a restaurant. The dictionary maps each item's name to an integer that represents how many of each item is available (e.g., * soda”: 4). • orders: A list of strings representing items that patrons at the restaurant have ordered. The list might include items not available for purchase. The function iterates over the orders list, treating each string in the list as a key in the stock dictionary. If the key is present in the dictionary, the function decrements the value associated with the key (provided that doing so would not make the value negative). The function also returns the total number of valid items purchased (as an integer). The function simply ignores strings in orders that are not valid keys in stock. As an example, suppose stock were the dictionary {soda': 0, burger: 3, 'chips": 5, "pizza': 7} and orders were [soda, sandwich”, burger", 'pizza', 'pizza', burger', 'pretzels'] The function would update stock to {soda': 0, burger': 1, chips": 5, "pizza': 5} and return 4.

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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Write a function named count_vowels that accepts a string as an argument. The function should count the number of times each vowel (the letters a, e, i, o, and u) appears in the string, and store those counts in a dictionary. When the function ends, the dictionary should have exactly 5 elements. In each element, the key will be a vowel (lowercase) and the value will be the number of times the vowel appears in the string.
PYTHON LANGUAGE
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Python: Karma Points
Programming Language: Python Limitations: Not allowed to use sklearn library
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Q1: Assignment Difficulty Dan has a list of problems suitable for Assignment 4. The difficulties of these problems are stored in a list of integers . The problem’s difficulty is represented by (the higher the integer, the more difficult the problem).ai-tha[i] Dan is too busy eating saltines to worry about Assignment 4 decisions, so he asks Michael the TA to select at least two problems from the list for the assignment. Since there are many possible subsets of the problems to consider and Michael has a life, he decides to consider only sublists (definition follows) of the list of problems. To make grading the assignment easier, Michael wants to pick problems that don’t vary too much in difficulty. What is the smallest difference between the difficulties of the most difficult selected problem and the least difficult selected problem he can achieve by selecting a sublist of length at least 2 of the original list of problems? Definition: A sublist of a list is any list you can obtain by…