我正在尝试在 PyCharm 中的 Python 2.7.15 上安装 numpy 库，但收到的错误消息是：
ERROR: Could not find a version that satisfies the requirement numpy (from versions: none)
ERROR: No matching distribution found for numpy
c:\python27\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:164: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 fro
m 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/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
有什么线索吗？