Printing US postal bar code. Python Language

Problem specification: Write a program that asks the user to enter a zip code (in ZIP+4 format) then encode the zip code and prints out the barcode (note: this is the old format barcode.)

Challenge (optional): (1) instead of ZIP+4, if a user enters just zip code say 55555, the program will automatically treat it as 55555-0000; (2) implement your own module for the displaying the digits.

Problem background information: The following table shows the encoding for decimal digits. Check sum is (10-sum mod 10).

Digit	7 4 2 1 0	Barcode
0	1 1 0 0 0
1	0 0 0 1 1
2	0 0 1 0 1
3	0 0 1 1 0
4	0 1 0 0 1
5	0 1 0 1 0
6	0 1 1 0 0
7	1 0 0 0 1
8	1 0 0 1 0
9	1 0 1 0 0
Start/Stop	1

Example: The ZIP+4 of 55555-1237 yields a check digit of 2 for encoded data of 5555512372 Together with the initial and terminal frame bars, this would be represented as:

Your program should import a digitprint module (see attachment) that has print_zero(), print_one(), print_start_stop() functions (instead of using the given module you can write your own functions to print out the barcode for digits), write a function that reads in a ZIP+4 code and returns a string by removing the character, another function for generating the check sum, and then a main function that completes the project. Dont forget to call the main function to run.

Testing requirements:

1. print out the barcode for: 55555-1237 91768-1234 20500-0000
2. input 55555 (depends on your program design could display bar code or invalid input)
3. input 5AB&7 (invalid input)