Programming Assignment 5 (125 Points) Assignment Overview This assignment will give you some experience with dictionaries, as well as some more practice with file I/O. Part 1: Phone keypads [50 points] The international standard letter/number mapping found on the telephone is shown below: 1 2 ABC 3 DEF 4 GHI 5 JKL 6 MNO 7 PQRS 8 TUV 9 WXYZ 0 Write a function that returns a number, given an uppercase letter, as follows: def getNumber(uppercaseLetter): Write a test program that prompts the user to enter a phone number as a string. The input number may contain letters. The program translates a letter (upper- or lowercase) to a digit and leaves all other characters intact. Here is a sample run of the program: Enter a string: 1-800-Flowers 1-800-3569377 Enter a string: 1800flowers 18003569377 Part 2: File Encryption and Decryption [75 points] Write a program that uses a dictionary to assign codes to each letter of the alphabet. For example: codes = { ‘ A’ : ‘ %’ , ‘ a’ : ‘ 9’ , ‘ B’ : ‘ @’ , ‘ b’ : ‘ #’ , etc…} Using this example, the letter A would be assigned the symbol %, the letter a would be assigned the number 9, the letter B would be assigned the symbol @, and so forth. The program should open a specified text file, read its contents, and then use the dictionary to write an encrypted version of the files contents to a second file. Each character in the second file should contain the code for the corresponding character in the first file. Submission 1. Include the standard program header at the top of your Python file. 2. Submit your files to Etudes under the Assignment 5 category. Phone keypads.py Encryption.py Standard program header Each programming assignment should have the following header, with italicized text appropriately replaced. Note: You can copy and paste the comment lines shown here to the top of your assignment each time. You will need to make the appropriate changes for each assignment (assignment number, due date, and description). ”’ * Program or Lab #: Insert assignment name * Programmer: Insert your name * Due: Insert due date * CS21A, Summer 2014 * Description: (Give a brief description for Assignment 5) ”’ Write a second program that opens an encrypted file and displays its decrypted contents on the screen.
Looking for solution of this Assignment?
WHY CHOOSE US?
We deliver quality original papers |
Our experts write quality original papers using academic databases.We dont use AI in our work. We refund your money if AI is detected |
Free revisions |
We offer our clients multiple free revisions just to ensure you get what you want. |
Discounted prices |
All our prices are discounted which makes it affordable to you. Use code FIRST15 to get your discount |
100% originality |
We deliver papers that are written from scratch to deliver 100% originality. Our papers are free from plagiarism and NO similarity.We have ZERO TOLERANCE TO USE OF AI |
On-time delivery |
We will deliver your paper on time even on short notice or short deadline, overnight essay or even an urgent essay |