Python异常处理调试

eg

    def connect(self):
        try:
            #print('try  key  connect')
            self._key_connect() 
            print('ssh key connect sucess')
        except Exception as e:
            print("kye err:",e)
            print('ssh key conect failed, trying to password connect...')
            try:
                self._password_connect()  # 密码登录
                print('ssh password connect sucess')
            except:
                print('ssh password connect failed')