升级python（2.7-3.6.2）

#no modul _ssl # 编译的时候 –with-ssl

# 下载依赖包

yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel -y

# 下载并安装python3.6.2

mkdir ~/sources

cd ~/sources

wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz

tar xf Python-3.6.2.tgz

cd Python-3.6.2

./configure --prefix=/usr/local/python3.6.2 --with-ssl --with-universal-archs=all

make && make install

ln -s /usr/local/python3.6.2/ /usr/local/python

echo 'PATH=/usr/local/python/bin:$PATH' >> /etc/profile

export PATH=/usr/local/python/bin:$PATH

　#如果上定时任务，或者编写脚本想使用python3的命令，那么使用全路径

/usr/local/python/bin/python3 test.py

　　测试

[root@test ~]# vim test.py
[root@test ~]# cat test.py 
#!/usr/local/python/bin/python3
print('hello world')
[root@test ~]# python3 test.py 
hello world
[root@test ~]# chmod +x test.py 
[root@test ~]# ./test.py 
hello world