我运行"pip3 install rsa == 3.4.2"之后.我不能再使用"pip3 list"命令了,几乎任何pip命令都会失败.
错误如下所示
Exception:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2584, in version
return self._version
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pip/_vendor/pkg_resources/__init__.py", line 2691, in __getattr__
raise AttributeError(attr)
AttributeError: _version
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pip/_internal/cli/base_command.py", line 176, in main
status = self.run(options, args)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pip/_internal/commands/list.py", line 148, in run
self.output_package_listing(packages, options)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pip/_internal/commands/list.py", line 205, in output_package_listing
data, header = format_for_columns(packages, options)
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/pip/_internal/commands/list.py", line 271, in format_for_columns …