contrib/python/tornado/tornado-4/tornado/gen.py:1064: DeprecationWarning: the (type, exc, tb) signature of throw() is deprecated, use the single-arg signature instead.
contrib/python/tornado/tornado-4/tornado/gen.py:1064: DeprecationWarning: the (type, exc, tb) signature of throw() is deprecated, use the single-arg signature instead.
