
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Question

Transcribed Image Text:Problem A:
Write a Python program that reads a list of strings from a file "strings.txt" (see Figure 1) and prints
Palindrome words and non-palindrome words in separate columns (as shown in Figure 2)
Total number of words in the input file
• Palindrome Percentage, which is computed as follows
Number of palindrome words
Total number of words in the file
х 100
Enter filename: strings.txt
Palindrome
Non-Palindrome
redivider
deified
redivider
deified
sentences
sentences
noon
noon
words
words
civic
civic
radar
radar
different
different
definition
definition
context
context
level
level
reviver
reviver
malayalam
malayalam
palindrome
palindrome
genetics
genetics
hannah
hannah
ada
ada
anna
meaning
python
anna
meaning
python
Total numbers of words is 20
Figure 1 A sample input file
55.000 % of numbers are palindrome
Figure 2 A sample output using sample input in figurel
Each line in the input file contains one word as shown in Figure 1. Your program should read each
word and identify if it is a palindrome or not. A palindrome is a text that reads the same forward
(right to left) and backward (left to right).
Your program must define and use the following functions:
• isPalindrome(): receives a string and returns True if the string is palindrome, otherwise it
returns False. For example, if the string is “Python" the function will return False. If the string is
"Hannah" it returns True.
• displayHeader(): displays the header (the first three lines) shown in Figure 2
• main(): opens the input file "strings.txt" for reading, reads data from it, and calls the various
functions, and finally prints the results on screen formatted as shown in Figure 2. If the input
file is not found, an exception is raised and an error message must be displayed.
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps

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
- Using Pythonarrow_forwardWhat is the degree of a relationship? Give anexample of each of the relationship degreesillustrated herein.arrow_forwardThe next three questions concern a program that opens a scores file provided by the user, reads it one line at a time, adds the scores as floating point numbers to a list scores, and then computes the average score. The example file scores.csv looks like this: Student Name, Test Score Jinyue, 98.5 Adesh, 97.4 Pinn, 99.1 Arindaam, 97.2 The first part of the program opens the file and reads just the first line into the variable header. # Open the Filename and ignore the first line filename= input("Enter filename:") open (filename) fhand = header = Fill in the blank to complete the program fragment:arrow_forward
- can you do it pythonarrow_forwardThank you! The same homework with different requirements(below). what is code? homework6 Reading data from a file into a list Ask user to enter file containing floating point numbersOpen and read file into a list of strings and assign to linesFor each line in lines Split the line into individual floating point numbers and assign to tokens Assign 0 to total Assign first number to smallest Assign first number to largest For each token in tokens Convert to a floating point number and assign to number Add number to total If number is less than smallest, assign number to smallest If number is greater than largest, assign number to largest Calculate average Display total, average, smallest number, largest numberarrow_forwardWrite a python program that prompts the user for their favorite basketball team. It should be able to read the list of teams provided below in a file called favorite_teams.txt and check if their team is in that file. Teams in the file:JazzBullsMavericksSpursIf the team is in the file let the user know that their team is in the list of favorites. If the team is not in the file, add the team to the end of the file. Also, let the user know that their team will be added to the file.Sample Run in File:What is your favorite NBA team? Jazz [Enter]Your team Jazz is in the listFile before and after run: JazzBullsMavericksSpurs Sample Run not in File:What is your favorite NBA team? Pelicans [Enter]Your team Pelicans is not in the list. It will be added.File before run: JazzBullsMavericksSpursFile after run:JazzBullsMavericksSpursPelicansarrow_forward
- Suppose you are given a text file that contains the names of people. Every name in the file consists of a first name and last name. Unfortunately, the programmer that created the file of names did not guarantee that each name was on a single line of the file. Read this file of names and write them to a new text file sorted according to first name, one name per line. For example, if the input file contains Ed Marston Bob Jones Jeff Williams Fred Charles The output file should be Bob Jones Ed Marston Fred Charles Jeff Williams Use arrays to solve the problem.arrow_forwardurgent plzarrow_forwardIn pythonarrow_forward
- Problem A straight line can be defined by a pair of points p1(x1, yı) and p2(x2, y2). The slope m of a line is defined as follow: У2 — У1 m = X2 - X1 Your program reads the points from a text file called 'points.txt’ which contains the coordinates of unknown number of pairs of points as shown in Figure 1. Each line contains four values x1, y1, x2, y2, where x1, yl are the coordinates of the first point and x2, y2 are the coordinates of the second point. 10 -2 7.5 -3.2 4 15.5 -4.6 21 -2 Зр 12.5 6. 2 5 -3 -6 10 3 10 15 Figure 1. Input file contains unknown number of point pairs Use Spider, to create the following files: (i) The input file 'points.txt' shown in Figure 1. Your Python program that reads from the input file 'points.txt', the coordinates of unknown number of pairs of points, computes the corresponding slopes then prints the results on the screen as shown in Figure 2. (ii) Line # X1 Y1 X2 Y2 slope 1 10.00 -2.00 7.50 -3.20 0.48 2 4.00 15.50 -4.60 21.00 -0.64 3 0.00 0.00 0.00…arrow_forwardIn Python.arrow_forwardWrite a program that asks the user for a file name and a string to search for. The program should search the file for every occurrence of a specified string. When the string is found, the line that contains it should be displayed. After all the occurrences have been located, the program should report the number of times the string appeared in the file.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