在oracle Linux上安装Python2.7.11 ，安装完后发现（网上各种解释的依赖都具备了）
Python 2.7.11 (default, Mar 19 2018, 15:19:40)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-18)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import ssl
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/feixiaohui/python/lib/python2.7/ssl.py", line 97, in <module>
import _ssl # if we can't import it, let the error propagate
ImportError: No module named _ssl
>>> exit()
但是其安装Python2.7.9就可以实现import ssl
坑！