Print exception traceback of GraphQLLocatedError

[karlosss]

Hi!

I just spent the whole afternoon trying to find out how to display the exception traceback when the exception happens as a result of a request. I have a KeyError somewhere in my code and all I can see is

{
  "errors": [
    {
      "message": "'username'",
      "locations": [
        {
          "line": 17,
          "column": 3
        }
      ],
      "path": [
        "CustomUserUpdate"
      ]
    }
  ],
  "data": null
}

Would be way more informative if either the message field could somehow show the whole traceback, or, preferably, the traceback was printed into the console.

How do I achieve that, if possible at all?

Thanks!

[karlosss]

Wow, that was fast! In the meantime I found a workaround:

File promise/promise.py, _settle_promise() method, add the following code to line 314:

if traceback is not None:
    import traceback as tb
    tb.print_tb(traceback)
    print("{}: {}".format(value.__class__.__name__, value))

and whenever an exception appears, its traceback is printed to stdout.