linux配置python环境

参考：https://www.cnblogs.com/yhongji/p/9383857.html
https://www.cnblogs.com/drcm/p/9946570.html

首先环境安装好各种配件

yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel libffi-devel

然后去官网下载到/usr/local/python

wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz
tar -zxvf Python-3.7.2.tgz
./configure --prefix=/usr/local/python/
make && make install

以上python就安装好了，然后就是建立超链接，因为linux自带py2.7，所以要删除/usr/bin下的python，然后再引过来

mv /usr/bin/python /usr/bin/python_bak
mv /usr/bin/pip /usr/bin/pip_bak
ln -s /usr/local/python/bin/python3 /usr/bin/python // 得这样全路径写好
ln -s /usr/local/python/bin/pip3 /usr/bin/pip

最后测试python -V显示3.7就OK了