def add_key_values(x: str)-> dict[str, int]: "Return a dictionary where the keys are the distinct characters appearing in x and the values are how many times they appear."" Starting from the top and considering each testcase in turn, please mark the 6 options that add nothing to what was covered by the previous tests. x= "", return: {} x= "a", return {"a":1} x="ab", return {"a": 1, "b":1} Ox="aab", return {"a": 2, "b":1} x= "1233", return:{"1". 1. 42"- 1. 43"-23

def add_key_values(x: str)-> dict[str, int]: "Return a dictionary where the keys are the distinct characters appearing in x and the values are how many times they appear."" Starting from the top and considering each testcase in turn, please mark the 6 options that add nothing to what was covered by the previous tests. x= "", return: {} x= "a", return {"a":1} x="ab", return {"a": 1, "b":1} Ox="aab", return {"a": 2, "b":1} x= "1233", return:{"1". 1. 42"- 1. 43"-23

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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Implement the following: Given: user_001 = {'username': 'jSmith001', 'first': 'John', 'last': 'Smith'} 1) Remove the key/value pair 'last':'Smith' from the dictionary user_001. 2) Access the values in the dictionary user_001 to print the following. Make sure to precisely match the output format below. Write your code in the ANSWER area provided below (must include comments if using code is not covered in the course). Example Output Hi John, your new login is jSmith001.
Exercise: empty_dictionary Description In this exercise, your function will receive no parameters. It will create an empty dictionary and return it. Function Name empty_dictionary Parameters None Return Value An empty dictionary. Examples empty_dictionary() > 0)
def city_dict(adict): """ Question 6 -Given a dictionary that maps a person to a list of countries they want to travel to, return a dictionary with the value being the list sorted by the last letter in each countries name. If two countries have the same last letter, sort by the first letter. -For an extra challenge, try doing this in one line (Optional). Args: adict (dict) Returns: dict >>> city_dict({"Pablo": ["Belgium", "Canada", "Germany"], "Athena": ["Italy", "France", "Egypt"], "Liv": ["Japan", "Bolivia", "Greece"]}) {'Pablo': ['Canada', 'Belgium', 'Germany'], 'Athena': ['France', 'Egypt', 'Italy'], 'Liv': ['Bolivia', 'Greece', 'Japan']} >>> city_dict({"Jacob": ["Bahamas", "Brazil", "Chile"], "Lexi": ["Colombia", "Finland", "Panama"], "Emily": ["Ireland", "Russia", "Kenya", "Jordan"]}) {'Jacob': ['Chile', 'Brazil', 'Bahamas'], 'Lexi': ['Colombia', 'Panama', 'Finland'], 'Emily': ['Kenya',…
Write code that prints out the keys that have a value less than 3 in the following dictionary: d= {'a':5, 'is':3, 'this':2, 'program':1}
This section has been set as optional by your instructor. OBJECTIVE: Write a program in Python that prints the middle value of a dictionary's values, using test_dict from the test_data.py module. NOTE: test_dict is created & imported from the module test_data.py into main.py Example 1: test dict = {'a':1,'b':9,'c':2,'d':5} prints 5 Example 2: test_dict = {'b':9,'d':5} prints 5 Hint: You may(or may not) find the following function useful: list.sort() which sorts the elements in a list. Note: the result is automatically stored in the original list, and return value from the function is None Туре list = [1, 2,3,2,1] After calling: list = [1,1,2,2,3] list.sort(), 339336.2266020 x3zgy7 LAB 13.11.1: Middlest Value (Structured Types) АCTIVITY 0/11 File is marked as read only Current file: test_data.py 1 #This module creates the test_dict to be used in main.py 2 #Reads input values from the user & places them into test_dict 3 dict_size = int(input()) #Stores the desired size of test_dict. 4…
Exercise: Least Dictionary Value Description In this exercise you will find the value in a dictionary with the least value. Least means that the value is less than or equal to all other values in the dictionary. Remember that the 2 Assistant Object inspector
Homework Assignment-1Topics: Functions, Dictionary, ImportProblem description: Write a python application to simulate an online clothing system. Thepurpose of this assignment is to gain experience in Python dictionary structure, create basicPython functions and import a module.Design solution: The template file contains a list of clothes item sold, each item in the listcontains the item id, name of the item and the prices. The program will generate an items_dictwhere each key is the item id of the cloth and the values will be a list of item name and priceinformation. A customer will be presented with a main menu with 4 different options: displayall items, add an item to cart, checkout and exit the program. A customer can buy an item byentering the ID of the item. This program implements a dictionary called cart, where each key isthe item id and the values are the list of name, price and quantity that user chooses topurchase. The program keeps repeating by displaying the main menu to…
Data structures dict_from_string(dict_str:str)->dict This function will be given a single parameter, a string representing a dictionary. Your job is to convert the string into an actual dictionary and return the dictionary. Make sure all key-value pairs in the string exist in the newly created dictionary. The string will contain only numbers or single letters as key values pairs. Make sure all letters are kept as strings and all numbers are converted to integers in the newly created dictionary. Example: String Input: '{9: 'V', 'G': 0, 'M': 9, 'u': 3, 2: 'o', 8: 'u', 'q': 9, 'D': 1}' Expected: {9: 'V', 'G': 0, 'M': 9, 'u': 3, 2: 'o', 8: 'u', 'q': 9, 'D': 1} String Input: '{10: 'D', 1: 'Z', 5: 'a'}' Expected: {10: 'D', 1: 'Z', 5: 'a'} String Input: '{'M': 2, 'V': 0, 3: 'x', 6: 'J', 5: 'J', 7: 'T', 8: 'P', 4: 'q', 1: 'h'}' Expected: {'M': 2, 'V': 0, 3: 'x', 6: 'J', 5: 'J', 7: 'T', 8: 'P', 4: 'q', 1: 'h'} String Input: '{3: 'D', 10: 'T', 7: 'm', 'u': 9, 't': 5, 6: 'Z', 'H': 10, 'B':…
Dictionaries: Given the following dictionary definitions: Foo = {1:’B’, 2:’D’, 3:’C’, 4:’A’} Bar = {A:’3’,’B’:1,’C’:2,’D’:4} Give the resulting value for each of the following expressions: Foo[Bar[‘A’]] Foo[Bar[‘B’]] Bar[Foo[1]] Bar[Foo[2]] Use a for loop to display the key/value pairs in the above dictionary, one pair to a line.
1. Course informationWrite a program that creates a dictionary containing course numbers and the room numbers ofthe rooms where the courses meet. The dictionary should have the following key-value pairs:Course Number (key) Room Number (value)CS101 3004CS102 4501CS103 6755NT110 1244CM241 1411The program should also create a dictionary containing course numbers and the names of theinstructors that teach each course. The dictionary should have the following key-value pairs:Course Number (key) Instructor (value)CS101 HaynesCS102 AlvaradoCS103 RichNT110 BurkeCM241 LeeThe program should also create a dictionary containing course numbers and the meeting timesof each course. The dictionary should have the following key-value pairs:Course Number (key) Meeting Time (value)CS101 8:00 a.m.CS102 9:00 a.m.CS103 10:00 a.m.NT110 11:00 a.m.CM241 1:00 p.m.The program should let the user enter a course number, then it should display the course’s roomnumber, instructor, and meeting time.
Assume that the variable data refers to the dictionary {'b':20, 'a':35}. Write the expressions that perform the following tasks: a. Replace the value at the key 'b' in data with that value's negation. b. Add the key/value pair 'c':40 to data.c. Remove the value at key 'b' in data, safely. d. Print the keys in data in alphabetical order.
Please code in python there's a dictionary original_dict = {'jack': 9, 'michael': 48, 'guido': 57, 'john': 33} . Using the generator of dictionaries create a new dictionary, all the entries need to be less than 40 and divide by 3 without the remainder.) (need to use if, multiple conditions)