Python terminal gives error after opening

user_12688015 0
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When I was trying to open python from terminal via python command, I faced with an error out of nowhere, terminal works as normal but I want to learn why this happened, thanks in advance.

PS C:\Users\blackbird> py
AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
Failed calling sys.__interactivehook__
Traceback (most recent call last):
  File "C:\Users\blackbird\AppData\Local\Programs\Python\Python38\lib\site.py", line 440, in register_readline
    readline.read_history_file(history)
  File "C:\Users\blackbird\AppData\Local\Programs\Python\Python38\lib\site-packages\pyreadline\rlmain.py", line 165, in read_history_file
    self.mode._history.read_history_file(filename)
  File "C:\Users\blackbird\AppData\Local\Programs\Python\Python38\lib\site-packages\pyreadline\lineeditor\history.py", line 82, in read_history_file
    for line in open(filename, 'r'):
  File "C:\Users\blackbird\AppData\Local\Programs\Python\Python38\lib\encodings\cp1254.py", line 23, in decode
    return codecs.charmap_decode(input,self.errors,decoding_table)[0]
UnicodeDecodeError: 'charmap' codec can't decode byte 0x9e in position 886: character maps to <undefined>
>>>
terminal python
1 Answers

I noticed that the pyreadline package was unintentionally installed on my computer from a 'requirements.txt' file.

From documentation:

The pyreadline package is a python implementation of GNU readline functionality it is based on the ctypes based UNC readline package by Gary Bishop. It is not complete. It has been tested for use with windows 2000 and windows xp.
...
Version 2.1 of pyreadline has been verfied for Python 2.7, and 3.4, 3.5.

Removing pyreadline package solves the problem.

user_126880150
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