我试图在虚拟环境中升级pip。我正在使用venvburrito包装器，在ubuntu 14.04机器上。当我尝试更新它时，会出现以下错误：
(virtual_env) ubuntu@ip-xxxxxxx:~$ pip install pip --upgrade
Collecting pip
Using cached pip-9.0.1-py2.py3-none-any.whl
Installing collected packages: pip
Found existing installation: pip 8.1.2
Not uninstalling pip at /home/ubuntu/.venvburrito/lib/python2.7/site-packages/pip-8.1.2-py2.7.egg, outside environment /home/ubuntu/.virtualenvs/virtual_env
Successfully installed pip-8.1.2
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.
如果我在虚拟环境中使用sudo进行尝试，会得到以下错误：
(virtual_env) ubuntu@ip-xxxxxxx:~$ sudo pip install --upgrade pip
The directory '/home/ubuntu/.cache/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 '/home/ubuntu/.cache/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.
/home/ubuntu/.local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:318: SNIMissingWarning: An HTTPS request has been made, but the SNI (Subject Name Indication) extension to TLS is not available on this platform. This may cause the server to present an incorrect TLS certificate, which can cause validation failures. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/security.html#snimissingwarning.
SNIMissingWarning
/home/ubuntu/.local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:122: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/security.html#insecureplatformwarning.
InsecurePlatformWarning
Requirement already up-to-date: pip in ./.local/lib/python2.7/site-packages
/home/ubuntu/.local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:122: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/security.html#insecureplatformwarning.
InsecurePlatformWarning
当我在虚拟环境外执行此操作时，它会正确安装。
任何帮助都将不胜感激。
谢谢
最佳答案
试试这个，对我有用。
(inside virtualenv):easy_install -U pip
或
(inside virtualenv):easy_install pip
关于python - 无法在虚拟环境中升级PIP，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/42529975/