python3中文输出报UnicodeEncodeError错误,如何解决，,代码# -- codin

python3中文输出报UnicodeEncodeError错误,如何解决，,代码# -- codin

代码

# -- coding: utf-8 --a='大小写'print(a)

使用idel能正常输出
但是运行python -u d:\a.py 就报这个错误
报错

======================Traceback (most recent call last):  File "D:\a.py", line 5, in <module>    print(a)  File "C:\Python30\lib\io.py", line 1491, in write    b = encoder.encode(s)  File "C:\Python30\lib\encodings\cp1252.py", line 19, in encode    return codecs.charmap_encode(input,self.errors,encoding_table)[0]UnicodeEncodeError: 'charmap' codec can't encode characters in position 0-2: character maps to <undefined>

chcp 65001

import ioimport sysfrom urllib.request import urlopensys.stdout = io.TextIOWrapper(sys.stdout.buffer,encoding='utf-8')res = urlopen("http://www.baidu.com")htmlBytes = res.read()print(htmlBytes.decode('utf-8'))

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