phone_numbers.py

phone_input = input("Please enter a ten-digit phone number using numbers and/or capital letters (using quotation marks, e.g. '555-GET-FOOD'): ")
print("YOU ENTERED: " + phone_input)

def translate_character_to_number(char):
    clean_char = str(char).upper()
    if clean_char in ["A","B","C"]:
        return "2"
    elif clean_char in ["D","E","F"]:
        return "3"
    elif clean_char in ["G","H","I"]:
        return "4"
    elif clean_char in ["J","K","L"]:
        return "5"
    elif clean_char in ["M","N","O"]:
        return "6"
    elif clean_char in ["P","Q","R","S"]:
        return "7"
    elif clean_char in ["T","U","V"]:
        return "8"
    elif clean_char in ["X","Y","Z"]:
        return "9"
    else:
        return str(char) # return the original character (e.g. '-') if it's not in the list of characters we care to translate

phone_number = ""

for char in phone_input:
    new_char = translate_character_to_number(char)
    phone_number += str(new_char)
    #print("CHAR: " + char + ". NEW CHAR: " + new_char + ". PHONE NUMBER: " + phone_number)

print("THE NUMERIC PHONE NUMBER IS: " + phone_number)