code and heroku logs

gistfile1.py

def download_s3(file_title):
    s3conn = boto.connect_s3(app.config["AWS_ACCESS_KEY_ID"],app.config["AWS_SECRET_ACCESS_KEY"])
    bucket = s3conn.get_bucket(app.config["S3_BUCKET"])
    key = bucket.get_key(file_title)
    seconds = 60*5
    url = key.generate_url(expires_in=seconds)
    return url

# then 
# g.url = download_s3('some_title')

gistfile2.pytb

2013-01-03T22:21:05+00:00 app[web.1]:     respiter = self.wsgi(environ, resp.start_response)
2013-01-03T22:21:05+00:00 app[web.1]:     response = self.make_response(self.handle_exception(e))
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/web_transaction.py", line 563, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     return wrapped(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]: Traceback (most recent call last):
2013-01-03T22:21:05+00:00 app[web.1]:     result = application(environ, _start_response)
2013-01-03T22:21:05+00:00 app[web.1]: 2013-01-03 22:21:05 [7] [ERROR] Error handling request
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/gunicorn/workers/sync.py", line 105, in handle_request
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/object_wrapper.py", line 220, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     self._nr_instance, args, kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/web_transaction.py", line 485, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1701, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     return self._nr_next_object(environ, start_response)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1689, in wsgi_app
2013-01-03T22:21:05+00:00 app[web.1]:     response = self.full_dispatch_request()
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1360, in full_dispatch_request
2013-01-03T22:21:05+00:00 app[web.1]:     rv = self.handle_user_exception(e)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1358, in full_dispatch_request
2013-01-03T22:21:05+00:00 app[web.1]:     rv = self.dispatch_request()
2013-01-03T22:21:05+00:00 app[web.1]:     self._nr_instance, args, kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/object_wrapper.py", line 220, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     self._nr_instance, args, kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:     return wrapped(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask_login.py", line 496, in decorated_view
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/petalapp/views.py", line 135, in add_pci_form
2013-01-03T22:21:05+00:00 app[web.1]:     return fn(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]: AttributeError: 'NoneType' object has no attribute 'generate_url'
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/petalapp/aws/tools.py", line 58, in download_s3
2013-01-03T22:21:05+00:00 app[web.1]:     url = key.generate_url(expires_in=seconds)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/function_trace.py", line 81, in literal_wrapper
2013-01-03T22:21:05+00:00 app[web.1]:     url =download_s3(in_file + title)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/pre_function.py", line 14, in wrapper
2013-01-03T22:21:05+00:00 app[web.1]:     return self.view_functions[rule.endpoint](**req.view_args)
2013-01-03T22:21:05+00:00 app[web.1]:     return self.wsgi_app(environ, start_response)
2013-01-03T22:21:05+00:00 app[web.1]:     return wrapped(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/object_wrapper.py", line 220, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/function_trace.py", line 81, in literal_wrapper
2013-01-03T22:21:05+00:00 app[web.1]:     return wrapped(*args, **kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/object_wrapper.py", line 220, in __call__
2013-01-03T22:21:05+00:00 app[web.1]:     self._nr_instance, args, kwargs)
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/newrelic-1.9.0.21/newrelic/api/transaction_name.py", line 51, in literal_wrapper
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1687, in wsgi_app
2013-01-03T22:21:05+00:00 app[web.1]:   File "/app/.heroku/python/lib/python2.7/site-packages/flask/app.py", line 1344, in dispatch_request