Starting Out with Python (4th Edition)
4th Edition
ISBN: 9780134444321
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 9, Problem 1PE
Course information
Write a
| Course Number (key) | Room Number (value) |
| CS101 | 3004 |
| CS102 | 4501 |
| CS103 | 6755 |
| NT110 | 1244 |
| CM241 | 1411 |
The program should also create a dictionary containing course numbers and the names of the instructors that teach each course. The dictionary should have the following key-value pairs:
| Course Number (key) | Instructor (value) |
| CS101 | Haynes |
| CS102 | Alvarado |
| CS103 | Rich |
| NT110 | Burke |
| CM241 | Lee |
The program should also create a dictionary containing course numbers and the meeting times of each course. The dictionary should have the following key-value pairs:
| Course Number (key) | Meeting Time (value) |
| CS101 | 8:00 am |
| CS102 | 9:00 am. |
| 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 room number, instructor, and meeting time.
Expert Solution & Answer
Learn your wayIncludes step-by-step video
schedule05:18
Students have asked these similar questions
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.
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':…
Data structures unique_values(a_dict:dict)-> dict
This function will receive a single dictionary parameter known as a_dict. a_dict will contain a single letter as a string and numbers as values. This function is supposed to search a_dict to find all values that appear only once in the a_dict. The function will create another dictionary named to_ret. For all values that appear once in a_dict the function will add the value as a key in to_ret and set the value of the key to the key of the value in a_dict (swap the key-value pairs, since a_dict contains letters to numbers, to_ret will contain Numbers to Letters). Finally, the function should return to_ret.
Example:
a_dict: {'X': 2, 'Y': 5, 'N': 2, 'L': 2, 'W': 1, 'G': 0, 'R': 1}
Expected: {5: 'Y', 0: 'G'}
a_dict: {'Z': 3, 'P': 3, 'E': 2, 'G': 0, 'T': 5, 'L': 1, 'Q': 0}
to_ret: {2: 'E', 5: 'T', 1: 'L'}
a_dict: {'E': 3, 'X': 3}
to_ret: {}
a_dict: {'G': 3, 'D': 3, 'C': 4, 'Q': 1, 'H': 1, 'M': 2, 'Z': 1, 'W': 3}
to_ret: {4: 'C', 2: 'M'}…
Chapter 9 Solutions
Starting Out with Python (4th Edition)
Ch. 9.1 - An element in a dictionary has two parts. What are...Ch. 9.1 - Which part of a dictionary element must be...Ch. 9.1 - Suppose ' start' : 1472 is an element in a...Ch. 9.1 - Suppose a dictionary named employee has been...Ch. 9.1 - What will the following code display? stuff = {1 :...Ch. 9.1 - Prob. 6CPCh. 9.1 - Suppose a dictionary named inventory exists. What...Ch. 9.1 - What will the following code display? stuff = {1 :...Ch. 9.1 - What will the following code display? stuff = {1 :...Ch. 9.1 - What is the difference between the dictionary...
Ch. 9.1 - Prob. 11CPCh. 9.1 - Prob. 12CPCh. 9.1 - What does the values method return?Ch. 9.2 - Prob. 14CPCh. 9.2 - Prob. 15CPCh. 9.2 - Prob. 16CPCh. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - Prob. 22CPCh. 9.2 - After the following statement executes, what...Ch. 9.2 - After the following statement executes, what...Ch. 9.2 - Prob. 25CPCh. 9.2 - Prob. 26CPCh. 9.2 - After the following code executes, what elements...Ch. 9.2 - Prob. 28CPCh. 9.2 - After the following code executes, what elements...Ch. 9.2 - After the following code executes, what elements...Ch. 9.2 - After the following code executes, what elements...Ch. 9.2 - Prob. 32CPCh. 9.3 - Prob. 33CPCh. 9.3 - When you open a file for the purpose of saving a...Ch. 9.3 - When you open a file for the purpose of retrieving...Ch. 9.3 - Prob. 36CPCh. 9.3 - Prob. 37CPCh. 9.3 - Prob. 38CPCh. 9 - You can use the __________ operator to determine...Ch. 9 - You use ________ to delete an element from a...Ch. 9 - The ________ function returns the number of...Ch. 9 - You can use_________ to create an empty...Ch. 9 - The _______ method returns a randomly selected...Ch. 9 - The __________ method returns the value associated...Ch. 9 - The __________ dictionary method returns the value...Ch. 9 - The ________ method returns all of a dictionary's...Ch. 9 - The following function returns the number of...Ch. 9 - Prob. 10MCCh. 9 - Prob. 11MCCh. 9 - This set method removes an element, but does not...Ch. 9 - Prob. 13MCCh. 9 - Prob. 14MCCh. 9 - This operator can be used to find the difference...Ch. 9 - Prob. 16MCCh. 9 - Prob. 17MCCh. 9 - The keys in a dictionary must be mutable objects.Ch. 9 - Dictionaries are not sequences.Ch. 9 - Prob. 3TFCh. 9 - Prob. 4TFCh. 9 - The dictionary method popitem does not raise an...Ch. 9 - The following statement creates an empty...Ch. 9 - Prob. 7TFCh. 9 - Prob. 8TFCh. 9 - Prob. 9TFCh. 9 - Prob. 10TFCh. 9 - What will the following code display? dct =...Ch. 9 - What will the following code display? dct =...Ch. 9 - What will the following code display? dct =...Ch. 9 - What will the following code display? stuff =...Ch. 9 - How do you delete an element from a dictionary?Ch. 9 - How do you determine the number of elements that...Ch. 9 - Prob. 7SACh. 9 - What values will the following code display? (Dont...Ch. 9 - After the following statement executes, what...Ch. 9 - After the following statement executes, what...Ch. 9 - After the following statement executes, what...Ch. 9 - After the following statement executes, what...Ch. 9 - After the following statement executes, what...Ch. 9 - What will the following code display? myset =...Ch. 9 - After the following code executes, what elements...Ch. 9 - Prob. 16SACh. 9 - Prob. 17SACh. 9 - Prob. 18SACh. 9 - After the following code executes, what elements...Ch. 9 - Prob. 20SACh. 9 - Write a statement that creates a dictionary...Ch. 9 - Write a statement that creates an empty...Ch. 9 - Assume the variable dct references a dictionary....Ch. 9 - Assume the variable dct references a dictionary....Ch. 9 - Prob. 5AWCh. 9 - Prob. 6AWCh. 9 - Prob. 7AWCh. 9 - Prob. 8AWCh. 9 - Prob. 9AWCh. 9 - Prob. 10AWCh. 9 - Assume the variable dct references a dictionary....Ch. 9 - Write code that retrieves and unpickles the...Ch. 9 - Course information Write a program that creates a...Ch. 9 - Capital Quiz The Capital Quiz Problem Write a...Ch. 9 - File Encryption and Decryption Write a program...Ch. 9 - Unique Words Write a program that opens a...Ch. 9 - Prob. 5PECh. 9 - File Analysis Write a program that reads the...Ch. 9 - World Series Winners In this chapters source code...Ch. 9 - Name and Email Addresses Write a program that...Ch. 9 - Blackjack Simulation Previously in this chapter...Ch. 9 - Word Index Write a program that reads the contents...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Code an SQL statement that creates a table with all columns from the parent and child tables in your answer to ...
Database Concepts (8th Edition)
Write an input validation loop that asks the user to enter a number in the range of 10 through 24.
Starting Out with Java: Early Objects (6th Edition)
When two operators share an operand, the operator with the highest _____ executes first.
Starting Out With Visual Basic (7th Edition)
How high can you count with four decimal digits?
Digital Fundamentals (11th Edition)
Car Loan If A dollars are borrowed at r interest compounded monthly to purchase a car with monthly payments for...
Introduction To Programming Using Visual Basic (11th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Assume the variable dct references a dictionary. Write an if statement that determines whetherthe key 'James' exists in the dictionary. If so, display the value that is associated with that key.If the key is not in the dictionary, display a message indicating so.arrow_forwardPython Programming Assignment: Create a dictionary that takes a basketball team's information (that includes team's name and points) as parameter, creates a teams_dict and returns it. Also, create a parameter for write_file parameter that opens current results text file in write mode and writes the dictionary information to file as per format and closes the file.arrow_forwardAssume the variable definitions references a dictionary. Write an if statement that determines whether the key 'marsupial' exists in the dictionary. If so, delete 'marsupial' and its associated value. If the key is not in the dictionary, display a message indicating so.arrow_forward
- Python coding language Create a static dictionary with a number of users and with the following values: First name Last name Email address Password Ask the user for: 5. Email address 6. Password Loop (for()) through the dictionary and if (if()) the user is found print the following: 7. Hello, first name last name you have successfully logged in 8. Notify the user if the password and email address are wrong 9. Additional challenge: if you want the program to keep asking for a username and password when the combination is wrong, you will need a while() loop. 10. Save the file as assignment03yourlastname.pyarrow_forwardOverview This program will have you use a loop to prompt a user for three foods and their country of origin and then store them in a dictionary called food_dict). Then, it will prompt the user for a dish that they like and then will tell them the country of origin. Expected Output Example 1 What is good to eat? Tacos What country is that from? Mexico What is good to eat? Pho What country is that from? Vietnam What is good to eat? Burgers What country is that from? America What dish do you like? Burgers Burgers is from America Example 2 What is good to eat? Pizza What country is that from? Italy What is good to eat? Spaghetti What country is that from? Italy What is good to eat? Gelato What country is that from? Italy What dish do you like? Pizza Pizza is from Italy Specifications • You should submit a single file called M4A2.py • It should follow the submission standards outlined here: Submission Standards • Your program should start by defining an empty dictionary called food_dict •…arrow_forwardData structures concatenate_dict(dict_list:list)->dict This function will be given a single parameter known as the Dictionary List. Your job is to combine all the dictionaries found in the dictionary list into a single dictionary and return it. There are two rules for adding values to the dictionary: 1. You must add key-value pairs to the dictionary in the same order they are found in the Dictionary List. 2. If the key already exists, it cannot be overwritten. In other words, if two or more dictionaries have the same key, the key to be added cannot be overwritten by the subsequent dictionaries. Example: Dictionary List: [{'Z': 6, 'k': 10, 'w': 3, 'I': 8, 'Y': 5}, {'Y': 1, 'Z': 4}, {'X': 2, 'L': 5}] Expected: {'Z': 6, 'k': 10, 'w': 3, 'I': 8, 'Y': 5, 'X': 2, 'L': 5} Dictionary List: [{'z': 0}, {'z': 7}] Expected: {'z': 0} Dictionary List: [{'b': 7}, {'b': 10, 'A': 8, 'Z': 2, 'V': 1}] Expected: {'b': 7, 'A': 8, 'Z': 2, 'V': 1}arrow_forward
- ASSIGNMENT REQUIREMENTS This assignment requires a dictionary of state abbreviations and their capital cities. The abbreviations are the keys and the state capitals are the values. Start by entering data for any four states of your choice. Then, report this count but use a function to get the count. Use a while loop to add more abbreviations and capitals. The loop should continue until the user presses Enter when prompted for an abbreviation. Inside the while loop: If the state entered is already in the dictionary, report its capital. If it is not in the dictionary, prompt the user to enter the capital for that state and add it to the dictionary After the while loop ends: Report again the count of the number of states in the dictionary. Using another loop and the items() method, display all the state abbreviations and their capitals. In the same Python program write this code, although it has nothing to do with the states code. Using a dictionary comprehension, create a…arrow_forwardExercise: Check Monster Character Exists Description In this series of exercises, you will create functionsto create, modify and examine dictionaries thatrepresent characters in an animated film, and thecast members who voice the characters. Thekeys of the dictionary will be character names.The values in the dictionary will be voice actornames. For this exercise, you will create a function thatchecks if a character is already in the dictionary. Files • monsterfunctions.py : set of functions to work with monster cast dictionaries. Function Name has_character Parameters • monsters: a dictionary • character: a string, the name of a character Action Checks if character is a key in monsters. Return Value True if character is a key in monsters, otherwise False. Examples monsters = create_monster_cast()monsters = add_cast_member(monsters, "Mike", "William Crystal")has_character(monsters, "Mike") -> Truehas_character(monsters, "Sully") -> Falsearrow_forwardExercise: 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 inspectorarrow_forward
- python exercise: Write a Python function called get_top_students that takes the list of dictionaries as input and returns a dictionary containing the name and GPA of the top two students in the list. Each dictionary has the following keys: "name", "age", "major", and "gpa".arrow_forwardAssume, you are given two dictionaries. The dictionary named current_sem_data contains the GPA of 3 students of their current semester courses. The dictionary named previous_sem_data contains their previous semesters’ CGPA and credits completed respectively. Assume that all courses are of 3 credits each.current_sem_data = {"John":[4.0,3.7,4.0], "Tom":[3.3,3.7,4.0], "Harry":[3.3,3.7,4.0]}previous_sem_data = {"John":[3.88,90], "Tom":[3.52, 70], "Harry":[3.25,85]}Now, write a Python program that will take a student’s name as user input and calculate and print that student’s current CGPA using both the given dictionaries.FORMULA for calculating CGPA:current_total_GPA= ∑ (current course grade X credit)previous_total_GPA= Previous CGPA* total credits previouslyC.G.P.A = (current_total_GPA + previous_total_GPA)/(Total Credits completed till current semester)=======================================================Sample Input 1:JohnSample Output 1:*****Data for John*****Previous semester's…arrow_forwardAssume, you are given two dictionaries. The dictionary named current_sem_data contains the GPA of 3 students of their current semester courses. The dictionary named previous_sem_data contains their previous semesters’ CGPA and credits completed respectively. Assume that all courses are of 3 credits each.current_sem_data = {"John":[4.0,3.7,4.0], "Tom":[3.3,3.7,4.0], "Harry":[3.3,3.7,4.0]}previous_sem_data = {"John":[3.88,90], "Tom":[3.52, 70], "Harry":[3.25,85]}Now, write a Python program that will take a student’s name as user input and calculate and print that student’s current CGPA using both the given dictionaries.FORMULA for calculating CGPA:current_total_GPA= ∑ (current course grade X credit)previous_total_GPA= Previous CGPA* total credits previouslyC.G.P.A = (current_total_GPA + previous_total_GPA)/(Total Credits completed till current semester)=======================================================Sample Input 1:JohnSample Output 1:*****Data for John*****Previous semester's…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Np Ms Office 365/Excel 2016 I NtermedComputer ScienceISBN:9781337508841Author:CareyPublisher:Cengage
Np Ms Office 365/Excel 2016 I Ntermed
Computer Science
ISBN:9781337508841
Author:Carey
Publisher:Cengage
Dictionaries - Introduction to Data Structures (Episode 8); Author: NullPointer Exception;https://www.youtube.com/watch?v=j0cPnbtp1_w;License: Standard YouTube License, CC-BY