ピップモジュールをインストールしようとしたときに操作が許可されないエラー

Question

再試行モジュールをpip経由でインストールしようとすると、以下のエラーが発生します。

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. 

私はMac OSX El Capitanを使用しています。エラーは、OSError：[Errno 1] Operationは許可されていないと言います。私はsudoで同じコマンドを実行しようとしましたが、エラーメッセージはまだそこにあります。

Answer 1

エルキャピタンには、古いバージョンの6つがインストールされており、変更することはできません。 Pipはそれをアップグレードの一部としてアンインストールしようとしており、実行できません。これを試してみてください：

pip install retrying --ignore-installed six 

理想的には、必要なバージョンをすべてインストールできるようにするvirtualenvを使用します。