• Module pg8000 works indeed! Thanks guys!

  • I had a feeling boto3 or its dependencies were causing this issue, and seemed to be right.
    I reinstalled Pythonista3 and imported flask without issues. Then I installed ptinstaller and stash and could still import flask (as expected). Then I installed boto3 (and deps) via pip/stash.
    Restarted pythonista and tried to import flask. Then I received this error again!
    Now I just installed flask via pip and this seems to work. I can now import flask and boto3.

Internal error.

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