pip3问题pip is configured with locations that require TLS/SSL, however the ssl module in Python is not avail

python安装完毕后，提示找不到ssl模块：
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting xxx
Could not fetch URL https://pypi.python.org/simple/xxxx/: There was a problem confirming the ssl certificate: Can’t connect to HTTPS URL because the SSL module is not available. - skipping
Could not find a version that satisfies the requirement xxx (from versions: )
No matching distribution found for xxx

解决方法：

yum install openssl openssl-devel -y 
vi /usr/src/Python**/Modules/Setup
　取消注释：

SSL=/usr/local/ssl
_ssl _ssl.c \
    -DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
    -L$(SSL)/lib -lssl -lcrypto
重新编译：
./configure --prefix=/usr/local/python
make
make install