def load_policy(self):
    '加载policy'
    if self.policy:
        self.write_log(u'load_policy(),初始化Policy')
        self.policy.load()
        self.write_log(u'Policy:{}'.format(self.policy.to_json()))
加载policy
def load_policy(self):
    
    if self.policy:
        self.write_log(u'load_policy(),初始化Policy')
        self.policy.load()
        self.write_log(u'Policy:{}'.format(self.policy.to_json()))