Starting Out with Python (4th Edition)
4th Edition
ISBN: 9780134444321
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Expert Solution & Answer
Chapter 9, Problem 7SA
Explanation of Solution
Access values in the dictionary:
In Python, a dictionary is defined as an unordered collection of data.
- • Each element of the dictionary is a key-value pair.
- • For each key, there is a value mapped to it.
- • Key is unique throughout the dictionary.
- • The elements in the dictionary are accessed using its corresponding keys.
- • The values in the dictionary can be changed but the keys cannot be changed...
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Assume int[] t = {0, 1, 2, 3, 4, 5}; What is t[6]?
undefined, there is an error in this code
4
6
5
Assume that int a[ 2 ][ 2 ] = { { 1, 2 }, { 3, 4 } };
the value of a[ 1, 1 ] = ______;
int* p:
int a[3]{1, 2, 3};
p = a;
What is the value of *(p+2)?
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...
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
- Dec2Hex function : def decimal_to_hex(number): hex_map = {0: '0', 1: '1', 2: '2', 3: '3', 4: '4', 5: '5', 6: '6', 7: '7', 8: '8', 9: '9', 10: 'A', 11: 'B', 12: 'C', 13: 'D', 14: 'E', 15: 'F'} hex_digits = [] while number > 0: hex_digits.append(hex_map[number % 16]) number //= 16 # Reverse the order of the hex digits and join them to form the final hex string hex_string = ''.join(reversed(hex_digits)) return f'0x{hex_string}' if hex_string else '0x0' Perform a Profile of your Dec2Hex function. Write a function that takes a timedate object as a parameter andcalculates the number of years from NOW to the time in the timedateobject. Add unit-testing code to your Dec2Hex exercise, and then perform aUnit test of the updated Dec2Hex code.arrow_forwardWhat will the following code display? mystring = 'abcdefg' print(mystring[:])arrow_forwarddouble tab1[5] = {2,3,4,5,6}; double tab2[5] = {6,5,4,3,2}; for(int i = 0;i<5;i++) { tab1[i] = tab1[i]*tab2[i]; cout<<tab1[i]<<" "; } 12 15 16 15 16 15 15 16 15 12 12 15 16 15 12 12 15 12 15 12arrow_forward
- Java code Lab 3 Problem Statement Write a program that reads in ten integers and displays the number of distinct numbers and the list of distinct numbers. (Note: distinct means unique or different. So if the user enters ten 5s, there is only one distinct number, which is 5.) You may use arrays and/or ArrayLists. All ten integers should be read from the user with one prompt. The integers entered should not be limited to any particular range. You may assume that the user will enter only valid integers. You must break the problem down into these separate methods that are each called from the main method: getUserInput findDistinctNumbers outputResults No global variables are allowed. Following is a sample run of the program: Enter ten integers separated by spaces: 1 2 -3 2 1 6 -3 -4 2 The number of distinct numbers is 5 The distinct numbers are 1 2 -3 6 -4arrow_forward#include <iostream>#include<iomanip>using namespace std; int main(){ const int ROW_HOURS=6; //declare variables const int CL_PAYRATE=2; double total_payout=0; double hours[ROW_HOURS][CL_PAYRATE]={ //declare array {0,12.85}, {0,12.85}, {0,12.85}, {0,11.75}, {0,11.75}, {0,11.15} }; cout<<fixed; cout<<setprecision(2); //setprecision of double values upto 2 decimal point for(int i=0;i<6;i++) //using loop get input from user { cout<<"Enter the hours worked by employee "<<i+1<<": "; cin>>hours[i][0]; //store values into hours } for(int i=0;i<6;i++) { double payout=hours[i][0]*hours[i][1]; //calculate payout of emplyee total_payout=total_payout+payout;…arrow_forward#include <stdio.h>#include <string.h>#define SIZE 6struct Student{char name[50];int id;float mark;};int Search1(char input[], struct Student data[]);int Search2(int input, struct Student data[]);int main() {char search_name[30];int search_id;int result1, result2;struct Student list[SIZE] = {{"Amylia", 544199, 75.4},{"Cheong", 143566, 92.3},{"Harry", 109774, 65.5},{"Krishnan", 334514, 86.7},{"Melissa", 257890, 55.4},{"Timothy",144656, 77.8}};printf("Enter Student Name: ");gets(search_name);result1 = Search1(search_name, list);//Answer for part (a)(ii) – Display the matching index of result1printf("Enter Student ID: ");scanf("%d",&search_id);result2 = Search2(search_id,list);//Answer for part (a)(iii)- Display the matching index of result2return 0;}//Answer for part (a)(i) – function definition for Search1//Answer for part (a)(iii) – function definition for Search2arrow_forward
- int[] array = { 1, 4, 3, 6 }; What would be a proper syntax to access 3 from this array?arrow_forwardLook at the following statements:int[ ] numbers1 = { 1, 3, 6, 9 };int[ ] numbers2 = { 2, 4, 6, 8 };int result;Write a statement that multiplies element 0 of the numbers1 array by element 3 of the numbers2 array and assigns the result to the result variable.arrow_forward#include <stdio.h>#include <string.h>#define SIZE 6struct Cake {char name[50];float price;};int searchChoice(char *choice, struct Cake data[]);void displayChoice(int index, struct Cake data[]);int main() {char choice[50];int index;//Answer for Part (i) – Declare and initialise array stockprintf("What is your choice of cake? ");gets(choice);index = searchChoice(choice, stock);displayChoice(index, stock);return 0;}//Answer for Part (ii) – Function definition for searchChoice//Answer for Part (iii) – Function definition for displayChoicearrow_forward
- Pointers: P3: Given the following string, after you call func2, if you printed out the array, what would be printed out? string a = {"c","a","n", func2(a); "y"}; void func2(string *arr) { arr[3) - "t"; arr[2]="vi"; %3Darrow_forward! AAAAAAAAA int main() { int Arr[100],n,max,i,j; cout>n; for(i=0;i>Arr[i];} for(i=0 j-n-1;i using namespace std; int main () { int x, y; x = 5; y = ++x ++X; cout << x < < V ; ۹:۱۳ *arrow_forwardWhat does the following code display?values = [2] * 5print(values)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education