pip 给出“ImportError：没有名为 setuptools 的模块”，但我可以在 python 解释器中导入 setuptools

Question

我正在一台新的 mac 上进行设置，我一直在正常运行，安装 pip 和一些软件包。突然之间，我尝试运行的每个 pip 命令都会抛出

Exception:
Traceback (most recent call last):
  File "/Library/Python/2.6/site-packages/pip-1.2.1-py2.6.egg/pip/basecommand.py", line 107, in main
    status = self.run(options, args)
  File "/Library/Python/2.6/site-packages/pip-1.2.1-py2.6.egg/pip/commands/install.py", line 248, in run
    import setuptools
ImportError: No module named setuptools

我想我不小心删除了一个目录或其他东西，所以我尝试重新安装 setuptools，遵循本网站上 other answers 的建议。我从here 下载了 setuptools egg 并像 shell 脚本一样运行它。得到这个输出：

Processing setuptools-0.6c11-py2.7.egg
Removing /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg
Copying setuptools-0.6c11-py2.7.egg to /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages
setuptools 0.6c11 is already the active version in easy-install.pth
Installing easy_install script to /Library/Frameworks/Python.framework/Versions/2.7/bin
Installing easy_install-2.7 script to /Library/Frameworks/Python.framework/Versions/2.7/bin

Installed /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg
Processing dependencies for setuptools==0.6c11
Finished processing dependencies for setuptools==0.6c11

现在，如果我启动一个交互式 python 会话，我可以import setuptools 没有错误，但是 pip（和其他命令行脚本）抱怨它没有安装。任何想法为什么 Python 似乎能找到它，而不是其他脚本？

如果有帮助，这就是sys.path 中的内容：

/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg
/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload
/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages

Answer 1

您的pip 似乎与您的 Python 不一致。比较：

File "/Library/Python/2.6/site-packages/pip-1.2.1-py2.6.egg/pip/basecommand.py", line 107, in main

到

Installed /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg

如果python2.7有setuptools，那么你应该有

/Library/Frameworks/Python.framework/Versions/2.7/bin/easy_install-2.7

可用，在这种情况下

easy_install-2.7 pip

应该给你pip-2.7。