import websocket as wskt

def opened(ws):
    print "opened"
    obj = json.loads('{"test":"foo"}') #should error with NameError: global name 'json' is not defined
    print obj["test"]

def foo(ws, msg):
    pass

def err(ws, e):
    print str(e)

def closed(ws):
    print "closed"

#opened(None) #this behaves correctly

wskt.setdefaulttimeout(None)
ws = wskt.WebSocketApp("wss://echo.websocket.org", on_error = err, on_close = closed)
ws.on_open = opened
ws.run_forever() #this doesn't