a = ws.recv()
File "/usr/local/lib/python2.7/dist-packages/websocket/_core.py", line 747, in recv
opcode, data = self.recv_data()
File "/usr/local/lib/python2.7/dist-packages/websocket/_core.py", line 764, in recv_data
opcode, frame = self.recv_data_frame(control_frame)
File "/usr/local/lib/python2.7/dist-packages/websocket/_core.py", line 777, in recv_data_frame
frame = self.recv_frame()
File "/usr/local/lib/python2.7/dist-packages/websocket/_core.py", line 829, in recv_frame