def __init__(self, user_agent=''):
self.user_agent = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36" if not len(
user_agent) else user_agent
self.headers = dict()
AsyncHTTPClient.__init__(self)
