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执行 python3 时出错

tag-icon • tag-icon python python3
执行 python3 时出错

我已经执行了这个命令

sudo rm /usr/bin/python3
sudo ln -s python3.5 /usr/bin/python3

此后，当我开始执行命令时，python3出现此错误

Failed to import the site module
Traceback (most recent call last):
  File "/usr/lib/python3.5/site.py", line 587, in <module>
    main()
  File "/usr/lib/python3.5/site.py", line 573, in main
    known_paths = addusersitepackages(known_paths)
  File "/usr/lib/python3.5/site.py", line 287, in addusersitepackages
    user_site = getusersitepackages()
  File "/usr/lib/python3.5/site.py", line 263, in getusersitepackages
    user_base = getuserbase() # this will also set USER_BASE
  File "/usr/lib/python3.5/site.py", line 253, in getuserbase
    USER_BASE = get_config_var('userbase')
  File "/usr/lib/python3.5/sysconfig.py", line 595, in get_config_var
    return get_config_vars().get(name)
  File "/usr/lib/python3.5/sysconfig.py", line 538, in get_config_vars
    _init_posix(_CONFIG_VARS)
  File "/usr/lib/python3.5/sysconfig.py", line 410, in _init_posix
    from _sysconfigdata import build_time_vars
  File "/usr/lib/python3.5/_sysconfigdata.py", line 1, in <module>
    import importlib
  File "/usr/lib/python3.5/importlib/__init__.py", line 57, in <module>
    import types
  File "/usr/lib/python3/dist-packages/gi/types.py", line 28, in <module>
    from ._constants import TYPE_INVALID
ImportError: attempted relative import with no known parent package

有人能帮我解决这个问题吗？请注意，当我使用 Ubuntu 16.04 时，python 3.5 已经存在，然后当我将 Ubuntu 更新到 18.04 时，它要求我保留它。我保持原样。

答案1

# delete wrong symlink
sudo rm /usr/bin/python3

# install deleted python version
sudo apt install python3.6

# create symlink again
sudo ln -s python3.6 /usr/bin/python3

这很有可能会成功。

请不要在将来删除重要的二进制文件。

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