Some things from talking to claude (maybe you find it useful):

• SubscribeDataTrackError / PublishDataTrackError not exported
• existing streams use aclose() (async), while DataTrackSubscription uses close() (sync); all of them can probably leverage https://www.geeksforgeeks.org/python/aenter-in-python/
• no remote_data_track_unpublished event - just mirroring rust comment here
• try_push should probably be push in python
• remote_data_track_published should be data_track_published as other tracks
• DataTrackFrame(payload=...) may validate the input type (what happens if you pass a string etc.)