edtf-validate

Valid EDTF provides validity testing against EDTF levels 1-3. You might find it most useful for tasks involving date validation and comparison. Typical usage often looks like this:

>>> from edtf_validate.valid_edtf import is_valid, isLevel2
>>> is_valid('2015-03-05')
True
>>> is_valid('Jan 12, 1990')
False
>>> isLevel2('1998?-12-23')
True

Or just straight from the command line...

$ edtf-validate 2015
2015	True

NOTE

Please take special care to note the name difference between command line usage and the other usage cases:

When importing into python, use an underscore separator, e.g. import edtf_validate.
When using the command line (or when talking about the package name), use a dash separator, e.g. $ edtf-validate.

What exactly does edtf-validate do?

This program will:

Determine if a string is valid edtf according to the specifications provided by the Library of Congress.
Allow the user to test each level of edtf.
ie. '2014' is valid according to level 0 rules, but '1984?' is only valid against level 1.

If you're confused what exactly the different levels of EDTF validation implicate, you can read about it in exhaustive detail here.

Installation

The easiest way to install is through pip. To use pip to install edtf-validate, along with all the dependencies, use:

$ pip install edtf-validate

License

See LICENSE.txt

Acknowledgements

The edtf-validate was developed at the UNT Libraries and has been worked on by a number of developers over the years including: