CHALLENGEACTIVITY3.4.2: Set theory methods.The following program includes 10 cities that two people have visited. Write a program that creates:1. A set all cities that contains all of the cities both people have visited.2. A set same_cities that contains only cities found in both person1_cities and person2_cities.3. A set different_cities that contains only cities found in only person1_cities or person2_cities.Sample output for all cities:['Accra', 'Anaheim', 'Bangkok', 'Bend', 'Boise', 'Buenos Aires', 'Cairo', 'Edmonton', 'Lima','London', 'Memphis', 'Orlando', 'Paris', 'Seoul', 'Tokyo', 'Vancouver', 'Zurich']NOTE: Because sets are unordered, they are printed using the sorted() function here for comparison.Code writing challenge activity demo446244.3123728.qx3zqy71 person1_cities = {'Edmonton', 'Vancouver', 'Paris', 'Bangkok', 'Bend', 'Boise', 'Memphis', 'Zurich',2 person2_cities {'Accra', 'Orlando', 'Tokyo', 'Paris', 'Anaheim', 'Buenos Aires', 'London', 'Lima',34 # Use set methods to create sets all_cities, same_cities, and different_cities.5678 print (sorted(all_cities))9 print (sorted(same_cities))10 print (sorted(different_cities))Run1 testpassedAll testspassedFeedback?

Answered: The following program includes 10…

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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CHALLENGE
ACTIVITY
3.4.2: Set theory methods.
The following program includes 10 cities that two people have visited. Write a program that creates:
1. A set all cities that contains all of the cities both people have visited.
2. A set same_cities that contains only cities found in both person1_cities and person2_cities.
3. A set different_cities that contains only cities found in only person1_cities or person2_cities.
Sample output for all cities:
['Accra', 'Anaheim', 'Bangkok', 'Bend', 'Boise', 'Buenos Aires', 'Cairo', 'Edmonton', 'Lima',
'London', 'Memphis', 'Orlando', 'Paris', 'Seoul', 'Tokyo', 'Vancouver', 'Zurich']
NOTE: Because sets are unordered, they are printed using the sorted() function here for comparison.
Code writing challenge activity demo
446244.3123728.qx3zqy7
1 person1_cities = {'Edmonton', 'Vancouver', 'Paris', 'Bangkok', 'Bend', 'Boise', 'Memphis', 'Zurich',
2 person2_cities {'Accra', 'Orlando', 'Tokyo', 'Paris', 'Anaheim', 'Buenos Aires', 'London', 'Lima',
3
4 # Use set methods to create sets all_cities, same_cities, and different_cities.
5
6
7
8 print (sorted(all_cities))
9 print (sorted(same_cities))
10 print (sorted(different_cities))
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Expert Solution

Algorithm

1. Create two sets person1_cities and person2_cities
2. Create a set all_cities by combining person1_cities and person2_cities using the union() method
3. Create a set same_cities by finding common elements between person1_cities and person2_cities using the intersection() method
4. Create a set different_cities by finding the difference between person1_cities and person2_cities using the difference() method
5. Sort all_cities, same_cities, and different_cities
6. Print all_cities, same_cities, and different_cities

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