UPC
Uniform Product Code Check Digit

UPC is a Python library which can compute the check digit associated with a uniform product code (UPC), or it can report whether a 12-digit UPC is actually valid.

Licensing:

The computer code and data files made available on this web page are distributed under the GNU LGPL license.

Languages:

UPC is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

Related Data and Programs:

BANK, a Python library which can compute the check digit associated with a US Bank Routing Number check digit, or it can report whether a 9-digit code is actually valid.

ISBN, a Python library which can determine the check digit for an International Standard Book Number or report whether a given ISBN is valid.

LUHN, a Python program which computes the Luhn check digit for a string, and can validate a string.

Reference:

1. David Savir, George Laurer,
   The Characteristics and Decodability of the Universal Product Code,
   IBM Systems Journal,
   Volume 14, Number 1, pages 16-34, 1975.

Source Code:

• upc.py, the source code.
• upc.sh, runs all the tests.
• upc.txt, the output file.

You can go up one level to the Python source codes.