删除重复的python安装后,Python会在mac上请求旧路径

Question

通过brew install python清理安装python后,我遇到以下错误.该链接属于我手动删除的以前的python安装.

$ virtualenv ENV
python: posix_spawn: /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python: No such file or directory

我正在使用MacOS 10.7.3,我通过pip安装了virtualenv:

$ sudo /usr/local/share/python/pip install virtualenv
 Downloading/unpacking virtualenv
 Downloading virtualenv-1.7.1.2.tar.gz (2.1Mb): 2.1Mb downloaded
 Running setup.py egg_info for package virtualenv

 warning: no previously-included files matching '*.*' found under directory 'docs/_templates'
 Installing collected packages: virtualenv
 Running setup.py install for virtualenv

 warning: no previously-included files matching '*.*' found under directory 'docs/_templates'
 Installing virtualenv script to /usr/local/share/python
 Successfully installed virtualenv
 Cleaning up...
$ virtualenv ENV
 python: posix_spawn: /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python: No such file or directory

我怎样才能解决这个问题？

编辑:我重新安装了MacOSx,现在返回到我以前的状态,这使我删除了预安装的python.

$ which python 
/Library/Frameworks/Python.framework/Versions/2.7/bin/python 
$ which pip /usr/local/bin/pip $ sudo pip install virtualenv
Downloading/unpacking virtualenv 
Downloading virtualenv-1.7.1.2.tar.gz (2.1Mb): 2.1Mb downloaded
Running setup.py egg_info for package virtualenv

warning: no previously-included files matching '*.*' found under directory 'docs/_templates'
Installing collected packages: virtualenv
Running setup.py install for virtualenv

warning: no previously-included files matching '*.*' found under directory 'docs/_templates'
Installing virtualenv script to /usr/local/bin
Successfully installed virtualenv
Cleaning up...


$ python virtualenv.py ENV
/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/??MacOS/Python: can't open file 'virtualenv.py': [Errno 2] No such file or directory

virtualenv.py位于/Library/Python/2.7/site-packages/virtualenv.py和/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/py2app/recipes/virtualenv.py但不知何故python错过了所有.

为什么会有这么多混乱？我该如何解决这个问题？

Answer 1

删除整个/System/Library/Frameworks/Python.framework/ 导致错误的结果后,我有完全相同的情况:

python: posix_spawn: /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python: No such file or directory

我设法恢复它,因为我有一个早期的整个磁盘副本,只是通过复制粘贴整个Python.framework目录.

我不知道它对系统的依赖程度有多大,但是如果有人想以同样的方式尝试这样做而不是重新安装整个OS X,那么从我这里压缩的整个Python.framework就在这里:http://andilabs.com/ Python.framework.zip

Answer 2

看起来你已经删除了Apple提供的Python 2.7,它是OS X 10.7的一部分.这是一件坏事.您可能无意中破坏了依赖于它的OS X部分.一般情况下,永远不要删除/usr(除/usr/local)或中的任何内容/System/Library.如果您安装某个更新版本的东西,请通过$ PATH管理,而不是删除.最好的长期事情是重新安装你删除的内容; 最安全的方法是重新安装OS X.一个临时的解决方法可能是移开/usr/bin/python方式并用链接替换它,/usr/local/bin/python2.7但你真的应该撤消对系统的损害.

更新:现在您已经恢复了系统Python(好!),我们可以解决您的原始问题.没有更多信息,我只能推测,但你可能正在安装 virtualenv错误的Python实例.请记住,您需要安装一个Distribute(或其前身setuptools)的副本,该副本提供该easy_install命令,并pip在您要使用的每个Python实例中单独复制一份.如果您使用easy_installApple附带的OS X,您将安装到Apple系统Python.你提到brew在评论中使用.如果是这样,你应该遵循它的说明和配方 ; 这就是为什么你有一个包经理.但是这里是你如何从头开始安装所有东西:

$ which python
/Library/Frameworks/Python.framework/Versions/2.7/bin/python
$ curl -O http://python-distribute.org/distribute_setup.py
$ python distribute_setup.py
[...]
creating /Library/Frameworks/Python.framework/Versions/2.7.3_release_10.6/lib/python2.7/site-packages/distribute-0.6.26-py2.7.egg
Extracting distribute-0.6.26-py2.7.egg to /Library/Frameworks/Python.framework/Versions/2.7.3_release_10.6/lib/python2.7/site-packages
Adding distribute 0.6.26 to easy-install.pth file
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/2.7.3_release_10.6/lib/python2.7/site-packages/distribute-0.6.26-py2.7.egg
Processing dependencies for distribute==0.6.26
Finished processing dependencies for distribute==0.6.26
After install bootstrap.
Creating /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools-0.6c11-py2.7.egg-info
Creating /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/setuptools.pth
$ curl -O https://raw.github.com/pypa/pip/master/contrib/get-pip.py
$ python get-pip.py
$ which pip
/Library/Frameworks/Python.framework/Versions/2.7/bin/pip
$ pip install virtualenv
[...]
    Installing virtualenv script to /Library/Frameworks/Python.framework/Versions/2.7/bin
Successfully installed virtualenv
Cleaning up...
$ which virtualenv
/Library/Frameworks/Python.framework/Versions/2.7/bin/virtualenv
$ virtualenv ENV
New python executable in ENV/bin/python
Installing setuptools............done.
Installing pip...............done.
$ source ENV/bin/activate
(ENV)$ which python
/Users/nad/ENV/bin/python
(ENV)$