KeyError
KeyError: 'guess'

Traceback (most recent call last)
File "/root/languagegame/env/lib/python2.7/site-packages/flask/app.py", line 1836, in __call__
return self.wsgi_app(environ, start_response)
File "/root/languagegame/env/lib/python2.7/site-packages/newrelic-1.13.1.31/newrelic/api/web_transaction.py", line 828, in __call__
result = application(environ, _start_response)
File "/root/languagegame/env/lib/python2.7/site-packages/newrelic-1.13.1.31/newrelic/api/object_wrapper.py", line 237, in __call__
self._nr_instance, args, kwargs, **self._nr_kwargs)
File "/root/languagegame/env/lib/python2.7/site-packages/newrelic-1.13.1.31/newrelic/api/function_trace.py", line 93, in literal_wrapper
return wrapped(*args, **kwargs)
File "/root/languagegame/env/lib/python2.7/site-packages/flask/app.py", line 1820, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "/root/languagegame/env/lib/python2.7/site-packages/newrelic-1.13.1.31/newrelic/api/object_wrapper.py", line 237, in __call__
self._nr_instance, args, kwargs, **self._nr_kwargs)
File "/root/languagegame/env/lib/python2.7/site-packages/newrelic-1.13.1.31/newrelic/api/pre_function.py", line 14, in wrapper
return wrapped(*args, **kwargs)
File "/root/languagegame/env/lib/python2.7/site-packages/flask/app.py", line 1403, in handle_exception
reraise(exc_type, exc_value, tb)
File "/root/languagegame/env/lib/python2.7/site-packages/flask/app.py", line 1817, in wsgi_app
response = self.full_dispatch_request()
File "/root/languagegame/env/lib/python2.7/site-packages/flask/app.py", line 1477, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/root/languagegame/env/lib/python2.7/site-packages/flask/app.py", line 1381, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/root/languagegame/env/lib/python2.7/site-packages/flask/app.py", line 1475, in full_dispatch_request
rv = self.dispatch_request()
File "/root/languagegame/env/lib/python2.7/site-packages/flask/app.py", line 1461, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/root/languagegame/env/lib/python2.7/site-packages/newrelic-1.13.1.31/newrelic/api/object_wrapper.py", line 237, in __call__
self._nr_instance, args, kwargs, **self._nr_kwargs)
File "/root/languagegame/env/lib/python2.7/site-packages/newrelic-1.13.1.31/newrelic/api/function_trace.py", line 93, in literal_wrapper
Display the sourcecode for this frameOpen an interactive python shell in this framereturn wrapped(*args, **kwargs)
File "/root/languagegame/env/lib/python2.7/site-packages/newrelic-1.13.1.31/newrelic/api/object_wrapper.py", line 237, in __call__
self._nr_instance, args, kwargs, **self._nr_kwargs)
File "/root/languagegame/env/lib/python2.7/site-packages/newrelic-1.13.1.31/newrelic/api/transaction_name.py", line 51, in literal_wrapper
return wrapped(*args, **kwargs)
File "/root/languagegame/languagegame/__init__.py", line 61, in decorated
resp = flask.make_response(f(*args, **kwargs))
File "/root/languagegame/languagegame/__init__.py", line 95, in play
next_level = ldb.next_level(db, game)
File "/root/languagegame/languagegame/db.py", line 62, in next_level
n_correct = sum(1 for l in past_levels if l['target'] == l['guess'])
File "/root/languagegame/languagegame/db.py", line 62, in <genexpr>
n_correct = sum(1 for l in past_levels if l['target'] == l['guess'])
KeyError: 'guess'
The debugger caught an exception in your WSGI application. You can now look at the traceback which led to the error.
To switch between the interactive traceback and the plaintext one, you can click on the "Traceback" headline. From the text traceback you can also create a paste of it. For code execution mouse-over the frame you want to debug and click on the console icon on the right side.

You can execute arbitrary Python code in the stack frames and there are some extra helpers available for introspection:

dump() shows all variables in the frame
dump(obj) dumps all that's known about the object
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