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重现

在cmd中输入Python，运行后，出现以下错误：

Python 3.7.3 (default, Mar 27 2019, 17:13:21) [MSC v.1915 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
Failed calling sys.__interactivehook__
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\site.py", line 439, in register_readline
    readline.read_history_file(history)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pyreadline\rlmain.py", line 165, in read_history_file
    self.mode._history.read_history_file(filename)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pyreadline\lineeditor\history.py", line 82, in read_history_file
    for line in open(filename, 'r'):
UnicodeDecodeError: 'gbk' codec can't decode byte 0xa2 in position 170: illegal multibyte sequence

原因是在读取filename的时候，是以unicode来读取的，需要打开C:\ProgramData\Anaconda3\lib\site-packages\pyreadline\lineeditor\history.py这个文件。

打开history.py，并编辑：

假如encoding参数即可。

启动运行python3时 UnicodeDecodeError: 'gbk' codec can't decode byte 0xa2 in position 170: illegal multibyte sequence

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原文地址：https://www.cnblogs.com/heenhui2016/p/11372461.html