cyclonedds-idl is a pure-Python extraction of the cyclonedds.idl runtime from Eclipse Cyclone DDS Python.

This package is for code that needs the Python IDL/CDR layer only, see the IDL documentation. It does not ship:

• the DDS runtime bindings
• native extensions
• bundled Cyclone DDS shared libraries
• CLI tools
• DDS-XTypes metadata support

pip install cyclonedds_idl

from dataclasses import dataclass
import cyclonedds_idl as idl

@dataclass
class KeyValue(idl.IdlStruct, typename="diagnostic_msgs/msg/KeyValue"):
    key: str
    value: str

msg = KeyValue(key="mode", value="walk")
blob = msg.serialize()
msg2 = KeyValue.deserialize(blob)
assert msg2 == msg

This is not a drop-in replacement for the full cyclonedds package. The import path is cyclonedds_idl, not cyclonedds.idl.

The code is copied from the upstream cyclonedds.idl package from eclipse-cyclonedds/cyclonedds-python and preserves the upstream license notices.