The Charm Tech team has just released version 2.1 of ops.
The main feature addition is the new Unit.open_port() APIs to interact with the open-port and other port-related hook tools.
It’s available from PyPI by using pip install ops, which should pick up the latest version (pin with ops==2.1.1 if you want to pin to a specific version, as we had an install bug in 2.1.0).
Various other minor changes are included as well. See the full release notes.