Which of the following statements is false? O a. You can create a dictionary by enclosing in curly braces, {}, a comma-separated list of key-value pairs, each of the form key: value. O b. You can create an empty dictionary with {}. O . The following code creates a dictionary with the country-name keys 'Finland', 'South Africa' and 'Nepal' and their corresponding Intemet country code values 'fi', 'za' and 'np': country_codes = {'Finland', 'fi', 'South Africa', 'za', *Nepal', 'np'} O d. When you output a dictionary, its comma-separated list of key-value pairs is always enclosed in curly braces.

Which of the following statements is false? O a. You can create a dictionary by enclosing in curly braces, {}, a comma-separated list of key-value pairs, each of the form key: value. O b. You can create an empty dictionary with {}. O . The following code creates a dictionary with the country-name keys 'Finland', 'South Africa' and 'Nepal' and their corresponding Intemet country code values 'fi', 'za' and 'np': country_codes = {'Finland', 'fi', 'South Africa', 'za', *Nepal', 'np'} O d. When you output a dictionary, its comma-separated list of key-value pairs is always enclosed in curly braces.

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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Question: 1 A Special Number is a number when the sum of the factorial of digits is equal to the original number (given number). For example, 145 is a Special Number because 145 = 1! + 4! + 5!. Your task is to write a Python code that takes some numbers as user input (separated by a comma) in a single line and groups the Special & Non-Special numbers in a dictionary. Note that the values corresponding to the keys in that dictionary must be in tuple format. Sample Input 1: 145, 346, 2, 83221, 7999888 Sample Output 1: {'Special': (145, 2), 'Non-Special': (346, 83221, 7999888 )} ----------------------------------------------------------------- Sample Input 2: 1431, 69716, 353, 7969828 Sample Output 2: {'Special': (), 'Non-Special': (1431, 69716, 353, 7969828)}
Assume that d refers to a dictionary. Write a statement in Python that retrieves from the dictionary the value that is associated with the key 'answer', and assigns this value to the result variable.
Given a dictionary where you have names of students as keys and their 3 exam grades as values, write a segment of code that calculates the average of every student and puts it in a list named averages. Then calculates the average of the class by averaging the results in the list averages. Run your code with the given dictionary studentExamGrades ## write your code in this cellstudentExamGrades = {"Alex":[90,75,60], "Sue":[100,88,95], "Matt":[66,80,75], "Raj":[55, 90, 70], "Sadie":[70, 89, 90]} #this is the given dictionary
Part: 3 ..Please answer the ques in Python with showing the code.Answeer the ques ASAP
QUESTION 8 Which of the following is not a declaration of the dictionary? A. {1, "A", 2"B"} B. dict([[1, "A"],[2,"B"]]) C. {} D. {1: 'A', 2: 'B'}
Question 13: Create an empty dictionary as an object of dictionary class. Add four key-value pairs to that empty dictionary one-by-one. Then, remove one of the pairs and display the latest version of the dictionary. use type () function.
This program will store roster and rating information for a soccer team. Coaches rate players during tryouts to ensure a balanced team. (1) Prompt the user to input five pairs of numbers: A player's jersey number (0 - 99) and the player's rating (1-9). Store the jersey numbers and the ratings in a dictionary. Output the dictionary's elements with the jersey numbers in ascending order (i.e., output the roster from smallest to largest jersey number). Hint: Dictionary keys can be stored in a sorted list. (3 pts) Ex: Enter player 1's jersey number: 84 Enter player 1's rating: 7 Enter player 2's jersey number: 23 Enter player 2's rating: 4 Enter player 3's jersey number: 4 Enter player 3's rating: 5 Enter player 4's jersey number: 30 Enter player 4's rating: 2 Enter player 5's jersey number: 66 Enter player 5's rating: 9 ROSTER Jersey number: 4, Rating: 5 Jersey number: 23, Rating: 4. Jersey number 30, Rating: 2 (2) Implement a menu of options for a user to modify the roster. Each option is…
You are to write a short program using dictionaries. Create a dictionary object that will store key value pairs of cars and prices. The list of items are as follows. Tesla M3 = 67,000, Lexus RX400 = 53,000, Infinity G12= 14,000, Ford F150= 60,000, Honda Civic= 31,500. 1) First step is to save the data in the dictionary called cars. 2) Second step is for your program to ask the user to enter which car do they want to buy using the input method. The user may enter "Ford 150". 3) Third step is locating the car in the cars dictionary object. 4) Next step is to get the price from the dictionary to show to the user in the following format. "The car you selected Ford 150 is for $60,000 and with tax the total cost will be $64,200" You should plan to use 7% for tax calculation. It could easily be calculated as 60000*.07 + 60000 = 64200
Create a program that asks the user to enter a series of city names and populations. Each name and population should be added to a dictionary as a key/value pair. Once they are finished entering these values, use a dictionary comprehension to create a new dictionary featuring only the cities whose populations are over 2 million. Print the key/value pairs in the resulting dictionary out.
Want python Program
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The function below, get_value_if_key, takes two arguments: the dictionary data_dict and a key of any type my_key. Fix the code to return the value from data_dict for key my_key if that key exists. The function should not return anything otherwise (i.e. return None).