[E 170801 17:32:26 ioloop:638] Exception in callback None
Traceback (most recent call last):
File "/usr/lib64/python2.6/site-packages/tornado/ioloop.py", line 888, in start
handler_func(fd_obj, events)
File "/usr/lib64/python2.6/site-packages/tornado/stack_context.py", line 277, in null_wrapper
return fn(*args, **kwargs)
File "/usr/lib64/python2.6/site-packages/tornado/iostream.py", line 519, in _handle_events
self._handle_read()
File "/usr/lib64/python2.6/site-packages/tornado/iostream.py", line 663, in _handle_read
self._read_from_buffer(pos)
File "/usr/lib64/python2.6/site-packages/tornado/iostream.py", line 778, in _read_from_buffer
self._run_read_callback(pos, False)
File "/usr/lib64/python2.6/site-packages/tornado/iostream.py", line 687, in _run_read_callback
future.set_result(self._consume(size))
File "/usr/lib64/python2.6/site-packages/tornado/iostream.py", line 910, in _consume
b = (memoryview(self._read_buffer)
NameError: global name 'memoryview' is not defined
python2.7版本以下不能正确运行