TypeError: unicode strings are not supported, please encode to bytes: 'hu'

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1、错误描述

>>> t=serial.Serial("COM3",4800);>>> n=t.write('00000200=0000020');Traceback (most recent call last):  File "<pyshell#5>", line 1, in <module>    n=t.write('00000200=0000020');  File "D:\Python\Python36\lib\site-packages\pyserial-3.3-py3.6.egg\serial\serialwin32.py", line 308, in write    data = to_bytes(data)  File "D:\Python\Python36\lib\site-packages\pyserial-3.3-py3.6.egg\serial\serialutil.py", line 63, in to_bytes    raise TypeError('unicode strings are not supported, please encode to bytes: {!r}'.format(seq))TypeError: unicode strings are not supported, please encode to bytes: '00000200=0000020'>>> n=t.write('hu');Traceback (most recent call last):  File "<pyshell#6>", line 1, in <module>    n=t.write('hu');  File "D:\Python\Python36\lib\site-packages\pyserial-3.3-py3.6.egg\serial\serialwin32.py", line 308, in write    data = to_bytes(data)  File "D:\Python\Python36\lib\site-packages\pyserial-3.3-py3.6.egg\serial\serialutil.py", line 63, in to_bytes    raise TypeError('unicode strings are not supported, please encode to bytes: {!r}'.format(seq))TypeError: unicode strings are not supported, please encode to bytes: 'hu'>>>

2、错误原因

需要将传输的字符串添加encode()方法，需要对字符串进行编码

3、解决办法

>>> n=t.write('00000200=00000200'.encode());>>> print(t.portstr);COM3>>> print(n);17>>> s=t.read(n);print(s);

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