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Pablo Estrada commented on BEAM-722: ------------------------------------ I am working on adding this feature. I'm basically mirroring the way in which we do this in Java, but trying to make it a bit more Pythonic. Here's a quick example of how this would work: {code:title=display_data_example.py|borderStyle=solid} class MyParDo(beam.PTransform): def display_data(self): return {'disp_data_key': MyParDo, 'loneliest_number': 1, 'secret_url': {'value': 'awebsite.com', 'url': 'http://awebsite.com'} , 'fn': {'value': self.fn, 'label': 'Display data of underlying DoFn'} } {code} I'm renaming the populateDisplayData function to display_data, and instead of using a builder, I return a dictionary of key:value pairs - and if a user wants to specify more parameters than just the key:value, they can pass a dictionary with them. Also, if the user passes as value an object that inherits from the HasDisplayData class, then that object's display data will be included. I have a [small commit|https://github.com/pabloem/incubator-beam/commit/f3c7ebd24ecfd0b46aa4b2d6c906c4c1331fd13a] that adds this. You can see some [examples in the few unittests|https://github.com/pabloem/incubator-beam/commit/f3c7ebd24ecfd0b46aa4b2d6c906c4c1331fd13a#diff-74a8ae565b6cf2631423124a587c2beaR1]. If everyone is okay with this, I'll add comments, tests, and address feedback. > Add Display Data to the Python SDK > ---------------------------------- > > Key: BEAM-722 > URL: https://issues.apache.org/jira/browse/BEAM-722 > Project: Beam > Issue Type: New Feature > Components: sdk-py > Reporter: Pablo Estrada > Assignee: Frances Perry > > The DisplayData feature has been added to the Java SDK (see blog post > announcing it: > https://cloud.google.com/blog/big-data/2016/06/dataflow-updates-see-more-details-about-your-pipelines). > We need now to add it to the Python SDK. -- This message was sent by Atlassian JIRA (v6.3.4#6332)