pycddl 0.2.0

Validate CBOR documents using CDDL schema language

PyCDDL: A CDDL validation library for Python

CDDL is a schema language for the CBOR serialization format. pycddl allows you to validate CBOR documents match a particular CDDL schema, based on the Rust cddl library.

For example, here we use the cbor2 library to serialize a dictionary to CBOR, and then validate it:

from pycddl import Schema
import cbor2

uint_schema = Schema("""
    object = {
        xint: uint
    }
"""
)
uint_schema.validate_cbor(cbor2.dumps({"xint", -2}))

If validation fails, a pycddl.ValidationError is raised.

Release notes

0.2.0

• Schemas are now only parsed once (when the Schema() object is created), instead of every time validation happens, which should improve validation performance.
• Updated to a newer version of underlying CDDL library, which should make CDDL parsing more compliant.
• Added a repr() implementation to Schema for easier debugging.

0.1.11

• Initial release.