Code0x58 opened a new pull request #2924: Py3 heronpy URL: https://github.com/apache/incubator-heron/pull/2924 I am thinking this may be all it takes to get Python3 topologies running, as it builds a universal package which can be included in a `.pex`, so I imagine it will just work if the workers have the same interpreter as the `.pex` is built for. This includes the `six` library which could be used to replace the `try`/`except` imports.
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