python - 删除了 argparse.py

Question

我使用 Ubuntu 18.04。错误地，我更改了 usr/lib/python3.6 中的 argparse.py 文件。我无法修复它，我想删除它，所以我可以重新安装。现在我无法重新安装，每当我尝试“pip install argparse”时，我都会收到如下错误:

Defaulting to user installation because normal site-packages is not writeable
ERROR: Exception:
Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/cli/base_command.py", line 186, in _main status = self.run(options, args)
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/commands/install.py", line 279, in run
session = self.get_default_session(options)
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/cli/req_command.py", line 74, in get_default_session
self._session = self.enter_context(self._build_session(options))
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/cli/req_command.py", line 91, in _build_session
index_urls=self._get_index_urls(options),
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/network/session.py", line 241, in __init__
self.headers["User-Agent"] = user_agent()
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/network/session.py", line 129, in user_agent from pip._vendor import distro 
File "/usr/local/lib/python3.6/dist-packages/pip/_vendor/distro.py", line 37, in <module>
import argparse ModuleNotFoundError: No module named 'argparse'
Traceback (most recent call last):
File "/usr/local/bin/pip", line 11, in <module> sys.exit(main())
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/cli/main.py", line 75, in main
return command.main(cmd_args)
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/cli/base_command.py", line 105, in main return self._main(args)
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/cli/base_command.py", line 224, in _main self.handle_pip_version_check(options)
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/cli/req_command.py", line 146, in handle_pip_version_check timeout=min(5, options.timeout)
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/cli/req_command.py", line 91, in _build_session index_urls=self._get_index_urls(options),
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/network/session.py", line 241, in __init__self.headers["User-Agent"] = user_agent()
File "/usr/local/lib/python3.6/dist-packages/pip/_internal/network/session.py", line 129, in user_agent
from pip._vendor import distro
File "/usr/local/lib/python3.6/dist-packages/pip/_vendor/distro.py", line 37, in <module>
import argparse
ModuleNotFoundError: No module named 'argparse'

你能帮我解决这个问题吗？

Answer 1

argparse是标准库的一部分，而不是第三方模块。标准库不是通过 pip 管理的。 (这既是它的祝福也是它的祸根)。

所以你必须修复或重新安装 python 本身。