每当我试图使用pip安装任何包时，我都会得到这个导入错误:
guru@guru-notebook:~$ pip3 install numpy
Traceback (most recent call last):
File "/usr/bin/pip3", line 9, in <module>
from pip import main
ImportError: cannot import name 'main'
guru@guru-notebook:~$ cat `which pip3`
#!/usr/bin/python3
# GENERATED BY DEBIAN
import sys
# Run the main entry point, similarly to how setuptools does it, but because
# we didn't install the actual entry point from setup.py, don't use the
# pkg_resources API.
from pip import main
if __name__ == '__main__':
sys.exit(main())
它之前工作得很好，我不知道为什么它会抛出这个错误。
我已经搜索了这个错误，但找不到任何方法来修复它。
如果你需要进一步的细节，请让我知道，我会更新我的问题。
我也有同样的问题，但我已经解决了。这是我的解决方案。
首先，当我运行pip install something时，错误如下所示:
Traceback (most recent call last):
File "/usr/bin/pip3", line 9, in <module>
from pip import main
ImportError: cannot import name 'main'
因此，我cd到文件/usr/bin/和cat pip3中查看其中的代码。我看到了这一点:
#!/usr/bin/python3
# GENERATED BY DEBIAN
import sys
# Run the main entry point, similarly to how setuptools does it, but because
# we didn't install the actual entry point from setup.py, don't use the
# pkg_resources API.
from pip import main
if __name__ == '__main__':
sys.exit(main())
然后我认为它不在安装路径中。所以我cd到python3-pip，像这样:
cd /.local/lib/python3.5/site-packages/pip
附注:你必须在电脑里按正确的方向输入cd
然后我cat文件来查看差异(你可以使用其他操作来查看代码):
cat __main__.py
我看到了这个:
from __future__ import absolute_import
import os
import sys
# If we are running from a wheel, add the wheel to sys.path
# This allows the usage python pip-*.whl/pip install pip-*.whl
if __package__ == '':
# __file__ is pip-*.whl/pip/__main__.py
# first dirname call strips of '/__main__.py', second strips off '/pip'
# Resulting path is the name of the wheel itself
# Add that to sys.path so we can import pip
path = os.path.dirname(os.path.dirname(__file__))
sys.path.insert(0, path)
from pip._internal import main as _main # isort:skip # noqa
if __name__ == '__main__':
sys.exit(_main())
所以，你能看出区别吗?我可以弄清楚，我必须使该文件与/usr/bin/pip3中的文件相同
因此，我复制了/.local/lib/python3.5/site-packages/pip中的代码来替换/usr/bin/pip3中的代码
问题就消失了!
注:pip3和pip在这个问题上没有区别。
如果我的解决方案解决了你的问题，我会很高兴!
我使用sudo apt删除python3-pip，然后pip工作。
~ sudo pip install pip --upgrade
[sudo] password for sen:
Traceback (most recent call last):
File "/usr/bin/pip", line 9, in <module>
from pip import main
ImportError: cannot import name 'main'
➜ ~ sudo apt remove python3-pip
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
libexpat1-dev libpython3-dev libpython3.5-dev python-pip-whl python3-dev python3-wheel
python3.5-dev
Use 'sudo apt autoremove' to remove them.
The following packages will be REMOVED:
python3-pip
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 569 kB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 215769 files and directories currently installed.)
Removing python3-pip (8.1.1-2ubuntu0.4) ...
Processing triggers for man-db (2.7.5-1) ...
➜ ~ pip
Usage:
pip <command> [options]
