# /usr/bin/env python

# This file is part of checkdigit.

# checkdigit is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# checkdigit is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with checkdigit.  If not, see <http://www.gnu.org/licenses/>.

"""An easy-to-use check digit library for data validation.

This Python library contains various functions relating to Luhn, ISBN, UPC and many other codes.
It is able to validate blocks of data, as well as calulate missing digits and check digits.

For more information, please look at the wiki page for this library:
https://checkdigit.rtfd.io/

"""
