我无法升级点,并安装包。
OSError: [Errno 13] Permission denied: '/Library/Python/2.7/site-packages/pip-8.1.2-py2.7.egg/EGG-INFO/dependency_links.txt'
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.