异常1：
ValueError: unsupported hash type sha224
ERROR:root:code for hash sha256 was not found.
Traceback (most recent call last):
File "/home/admin/Python/lib/python2.7/hashlib.py", line 139, in
globals()[__func_name] = __get_hash(__func_name)
File "/home/admin/Python/lib/python2.7/hashlib.py", line 91, in __get_builtin_constructor
raise ValueError('unsupported hash type ' + name)
解决方法：
sudo yum install openssl098e
我装了openssl-1.0.1s也不行，一定要装openssl098e
