Python-3.7.0 源码安装

1、依赖包安装:
yum install libffi-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make
2、python源码包：Python-3.7.0.tgz
tar -xzvf Python-3.7.0.tgz
cd Python-3.7.0
3、编译
./configure --prefix=/usr/local/python
make -j 2
4、安装
make install
5、查看扩展安装包：
/usr/local/python/bin/pip3 list
Package Version
pip 10.0.1
setuptools 39.0.1
6、添加Python命令到环境变量：
vim ~/.bash_profile
增加一行
PATH=$PATH:/usr/local/python/bin
7、使环境变量生效：
source ~/.bash_profile
8、查看Python版本：
python3.7 -V
9、更改系统默认python版本为Python3.7
mv /usr/bin/python /usr/bin/python2.7
ln -s /usr/local/python/bin/python3.7 /usr/bin/python
10、解决python升级后，YUM不能正常工作的问题
vi /usr/bin/yum
#!/usr/bin/python
改成
#!/usr/bin/python2.7
11、python -V
Python 3.7.0