Error on `atexit` event when using only pdftoxml util function about scraperwiki-python HOT 3 CLOSED

It is possible (but surprising) the interpreter teardown has already deleted the object by this point. I'm afraid this package is not receving much maintenance. Without trying to understand the problem in too much depth, if you change the condition to if _State is not None and _State._transaction is not None - does it fix the problem?

Is the problem reproducible 100% of the time? If the above suggested fix works, I will accept a pull request for that modification.

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@pwaller A similar fix to to the one you're proposing came to my mind as a simple workaround, but I wanted to check beforehand if this behaviour was expected.

Everytime I tried running my passing tests, the stacktrace outlined in my previous message appears.

I changed the culprint line with the following conditional statement, and the stacktrace appears no more.

  if _State and _State._transaction is not None:
      # condition logic

Will gladly send a pull request with this fix.

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I had a quick look at the CPython interpreter source but can't figure out why _State is being set to None by the time the atexit handler is called. Is threading perhaps involved? In any case, I think your fix is probably sufficient.

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