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:ProgramDataAnaconda3libsite.py",line 439,in register_readline
    readline.read_history_file(history)
  File "C:ProgramDataAnaconda3libsite-packagespyreadlinerlmain.py",line 165,in read_history_file
    self.mode._history.read_history_file(filename)
  File "C:ProgramDataAnaconda3libsite-packagespyreadlinelineeditorhistory.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:ProgramDataAnaconda3libsite-packagespyreadlinelineeditorhistory.py这个文件。

打开history.py，并编辑：

假如encoding参数即可。