嘗試安裝pip模塊時操作不允許出錯

Question

嘗試通過pip安裝重試模塊時出現以下錯誤。

The directory '/Users/ppious/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. 
The directory '/Users/ppious/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag. 
Collecting retrying 
    Downloading retrying-1.3.3.tar.gz 
Collecting six>=1.7.0 (from retrying) 
    Downloading six-1.10.0-py2.py3-none-any.whl 
Installing collected packages: six, retrying 
    Found existing installation: six 1.4.1 
    DEPRECATION: Uninstalling a distutils installed project (six) has been deprecated and will be removed in a future version. This is due to the fact that uninstalling a distutils project will only partially uninstall the project. 
    Uninstalling six-1.4.1: 
Exception: 
Traceback (most recent call last): 
    File "/Library/Python/2.7/site-packages/pip-8.1.2-py2.7.egg/pip/basecommand.py", line 215, in main 
    status = self.run(options, args) 
    File "/Library/Python/2.7/site-packages/pip-8.1.2-py2.7.egg/pip/commands/install.py", line 317, in run 
    prefix=options.prefix_path, 
    File "/Library/Python/2.7/site-packages/pip-8.1.2-py2.7.egg/pip/req/req_set.py", line 736, in install 
    requirement.uninstall(auto_confirm=True) 
    File "/Library/Python/2.7/site-packages/pip-8.1.2-py2.7.egg/pip/req/req_install.py", line 742, in uninstall 
    paths_to_remove.remove(auto_confirm) 
    File "/Library/Python/2.7/site-packages/pip-8.1.2-py2.7.egg/pip/req/req_uninstall.py", line 115, in remove 
    renames(path, new_path) 
    File "/Library/Python/2.7/site-packages/pip-8.1.2-py2.7.egg/pip/utils/__init__.py", line 267, in renames 
    shutil.move(old, new) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 302, in move 
    copy2(src, real_dst) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 131, in copy2 
    copystat(src, dst) 
    File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/shutil.py", line 103, in copystat 
    os.chflags(dst, st.st_flags) 
OSError: [Errno 1] Operation not permitted: '/tmp/pip-ugYqQT-uninstall/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/six-1.4.1-py2.7.egg-info' 
You are using pip version 8.1.2, however version 9.0.1 is available. 
You should consider upgrading via the 'pip install --upgrade pip' command. 

我正在使用Mac OSX El Capitan。錯誤說OSError：[Errno 1]操作不允許。我試着用sudo運行相同的命令，錯誤信息仍然存在。

Answer 1

埃爾卡皮坦自帶六個安裝的舊版本，無法修改。 Pip試圖卸載它作爲升級的一部分，不能這樣做。試試這個：

pip install retrying --ignore-installed six 

理想情況下，你會使用virtualenv，它將允許你安裝所有需要的版本。