＆amp ;:＆＃39; str＆＃39;不支持的操作数类型和＆＃39;字节＆＃39;在python中

Question

if(msg.topic == "abc" & msg.payload == b'1'):
     print("Loop entered")


TypeEror: unsupported operand types for &: 'str' and 'bytes'

Answer 1

and是我们在Python中编写连词的方式，所以：

if msg.topic == "abc" and msg.payload == b'1':