Question

Write a program in Python to solve the following task:

In this project, you will build a phone number from digits entered by your user. Your program will loop until 10 valid digits have been entered. It will then use those digits to display the phone number entered using the format: XXXXXXXXXX (or (XXX) XXX – XXXX for extra credit).

The program will ask for a digit, it will check to see if the digit is actually between 0 and 9 inclusively. If so, the digit will be stored as the next number in the phone number. Once all digits are entered, the program will display the phone number. Hint: Remember that str(num) will convert any num into a string.

Here is a typical program run.

Input:

Enter a digit: 1

Enter a digit: 4

Enter a digit: 11

Enter a digit: 2

Enter a digit: 0

Enter a digit: 21

Enter a digit: 7

Enter a digit: 9

Enter a digit: 1

Enter a digit: 0

Enter a digit: 5

Enter a digit: 4

Output: 1420791054 (or (142) 079 - 1054 for extra credit)

Answer 1

phone_number = ''
valid_count = 0

while valid_count < 10:
    d = int(input("Enter a digit: "))
    if 0 <= d <= 9:
        valid_count += 1
        phone_number += str(d)

phone_number = "(" + phone_number[:3] + ") " + phone_number[3:6] + " - " + phone_number[6:]
print(phone_number)