Tracebacks going through eliot.twisted.inline_callbacks lose some important frames at the end #449
Description
Consider:
from eliot.twisted import inline_callbacks from twisted.internet.defer import fail @inline_callbacks def foo(): yield yield bar() @inline_callbacks def bar(): yield raise Exception("Some problem") foo() This results in the following output:
$ python2 eliot-tb-example.py Unhandled error in Deferred: Traceback (most recent call last): File "eliot-tb-example.py", line 15, in <module> foo() File ".../twisted/internet/defer.py", line 1613, in unwindGenerator return _cancellableInlineCallbacks(gen) File ".../twisted/internet/defer.py", line 1529, in _cancellableInlineCallbacks _inlineCallbacks(None, g, status) --- <exception caught here> --- File ".../twisted/internet/defer.py", line 1416, in _inlineCallbacks result = result.throwExceptionIntoGenerator(g) File ".../twisted/python/failure.py", line 512, in throwExceptionIntoGenerator return g.throw(self.type, self.value, self.tb) File ".../eliot/_generators.py", line 141, in wrapper value_out = gen.throw(*value_in) File "eliot-tb-example.py", line 8, in foo yield bar() File ".../eliot/_generators.py", line 160, in wrapper value_in = yield value_out exceptions.Exception: Some problem The 2nd to last frame looks correct to me - line 8 in foo - but the subsequent frame - line 160 in wrapp is wrong. It should be line line 13 in bar.