当我使用pip-python install package_name命令安装python包时，它会显示：
You are using pip version 6.1.1, however version 8.0.3 is available.
You should consider upgrading via the 'pip install --upgrade pip'
command. Collecting package-name
/usr/lib/python2.6/dist-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:79:
InsecurePlatformWarning: A true SSLContext object is not available.
This prevents urllib3 from configuring SSL appropriately and may cause
certain SSL connections to fail. For more information, see
https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
InsecurePlatformWarning Could not find a version that satisfies the
requirement package-name (from versions: ) No matching distribution
found for package-name
但是，我已经将pip版本更新为8.0.3 。任何人都可以帮忙吗？