Question

In PYTHON

On a standard telephone, alphabetic letters are mapped to numbers in the following fashion:

A, B, and C = 2

D, E, and F = 3

G, H, and I = 4

J, K, and L = 5

M, N, and O = 6

P, Q, and R = 7

T, U, and V = 8

W, X, Y, and Z = 9

Write a fruitful function that takes any string of alphanumeric characters and returns a string with all alphabetic characters in the argument translated into their numeric equivalent, using the above mapping.

Alphabetic Telephone Number Translator: Many companies use telephone numbers like 713-GET-FOOD to make it easier for their customers to remember. But for customers, it is easier to dial a pure numeric phone number, rather than an alphanumeric number. Write an application program that asks the user to enter a 10 character alphanumeric telephone number in the form of XXX-XXX-XXXX. The application should then call your function to translate the alphanumeric phone number into its equivalent numeric phone number and display the result. For example if the user enters 713-GET-FOOD the application should display 713-438-3663. The application should allow the user to continue translating phone numbers until she/he decides to stop. Use meaningful variable names.

Answer 1

Python Program:

def telephone_number_translator():

    userInput = True

    while userInput:
        # phoneNumber => For company use
        phoneNumber = input('Enter the number in the format of XXX-XXX-XXXX eg. {713-GET-FOOD}: ')
        newPhoneNumber = '' # For customer use
        for char in phoneNumber: # for each character in input phone number
            # Mapping the character by using if-else except "-"
            if char == 'A' or char == 'B' or char == 'C':
                char = '2'
            elif char == 'D' or char == 'E' or char == 'F':
                char = '3'
            elif char == 'G' or char == 'H' or char == 'I':
                char = '4'
            elif char == 'J' or char == 'K' or char == 'L':
                char = '5'
            elif char == 'M' or char == 'N' or char == 'O':
                char = '6'
            elif char == 'P' or char == 'Q' or char == 'R' or char == 'S':
                char = '7'
            elif char == 'T' or char == 'U' or char == 'V':
                char = '8'
            elif char == 'W' or char == 'X' or char == 'Y' or char == 'Z':
                char = '9'
            newPhoneNumber = newPhoneNumber + char # for "-"

        print("Customer New Telephone Number : ", newPhoneNumber)

        choice = input("\nDo you want to convert another Telephone Number (Yes/No) ? : ")
        if (choice.lower() == "yes"):
            userInput = True
        elif (choice.lower() == "no"):
            print("Thank you !!")
            break
        
        
if __name__ == '__main__':
    print("********************Welcome To Alphabetic Telephone Number Convertor***********************\n")
    telephone_number_translator()

Output:

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