In RFC-29 we allowed Python logging to be used in Python code so long as the log messages were forwarded to lsst.log whenever C++ logging is a possibility. A forwarder does exist as lsst.log.LogHandler and instructions for its use are available at https://github.com/lsst/log/blob/master/doc/mainpage.dox#L59

To enable science pipelines to forward these Python log messages we need to setup this log handler in pipe_base.