Python 3 code and comments please. Alphabetic Telephone Number Translator progra

Question

Python 3 code and comments please.

Alphabetic Telephone Number Translator program

Many computers use telephone number like 555- GET-FOOD so the number is easier for their customers to remember.

On a standard telephone, the 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, R, and S = 7

T, U, and V = 8

W, X, Y, and Z = 9

Design a program that asks the user to enter 10 character telephone in the format XXX-XXX-XXXX. The program should display the telephone number with any alphabetic characters that appeared in the original translated to numeric equivalent.

For example, if the user enter 555-GET-FOOD the program should display 555-438-3663.

Explanation / Answer

def description():

print('This program asks users to enter a file name to open and translate'

'alphabetic numbers in it into numeric numbers.')

def get_file():

return input('Enter a file name with its extension: ')

def make_list(object_file):

phone_numbers = object_file.readlines()

index = 0

print('The list has', len(phone_numbers), 'lines')

while index < len(phone_numbers):

phone_numbers[index] = phone_numbers[index].rstrip(' ')

index +=1

print(phone_numbers)

return phone_numbers

def convert(phone_numbers):

index = 0

a = 0

new_object = open('numericnumbers.txt', 'w')

while index < len(phone_numbers):

# print(phone_numbers[index])

number = ''

for i in phone_numbers[index]:

# print(i)

if i == '0':

a = '0'

number += a

elif i == '1':

a = '1'

number += a

elif i == '2' or i == 'A' or i == 'B' or i == 'C':

a = '2'

number += a

elif i == '3' or i == 'D' or i == 'E' or i == 'F':

a = '3'

number += a

elif i == '4' or i == 'G' or i == 'H' or i == 'I':

a = '4'

number += a

elif i == '5' or i == 'J' or i == 'K' or i == 'L':

a = '5'

number += a

elif i == '6' or i == 'M' or i == 'N' or i == 'O':

a = '6'

number += a

elif i == '7' or i == 'P' or i == 'Q' or i == 'R' or i == 'S':

a = '7'

number += a

elif i == '8' or i == 'T' or i == 'U' or i == 'V':

a = '8'

number += a

elif i == '9' or i == 'W' or i == 'X' or i == 'Y' or i == 'Z':

a = '9'

number += a

else:

a = '-'

number += a

print(number)

new_object.write(number)

new_object.write(' ')

index += 1

new_object.close()

def main():

description()

file = get_file()

object_file = open(file, 'r')

phone_numbers = make_list(object_file)

object_file.close()

convert(phone_numbers)

main()

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