linux下装python3以及pip3
1、wget https://www.python.org/ftp/python/3.6.0/Python-3.6.0.tgz
2、tar zxvf Python-3.6.0.tgz
3、cd Python-3.6.0
4、./configure --prefix=/etc/python/python3.6
5、make && make install
6、ln -s /etc/python/python3.6/bin/python3.6 /usr/bin/python3
7、ln -s /etc/python/python3.6/bin/pip3.6 /usr/bin/pip3
8、pip3 install requests