查看“Python”的源代码

== 切换版本 centos下 ==
<source lang="shell">
# 安装
yum install python34

# 当前版本
python -V
Python 3.4.8

# 查看所有版本
whereis python
python: /usr/bin/python /usr/bin/python2.7 /usr/bin/python3.4 /usr/bin/python.bak /usr/bin/python3.4m /usr/lib/python2.7 /usr/lib/python2.6 /usr/lib/python3.4 /usr/lib64/python3.4 /usr/lib64/python2.7 /etc/python /usr/local/bin/python3.5m /usr/local/bin/python3.5 /usr/local/bin/python3.5m-config /usr/local/bin/python3.5-config /usr/local/lib/python3.5 /usr/include/python2.7 /usr/include/python3.4m /usr/share/man/man1/python.1.gz

# 切换版本
#将原来的链接备份
mv /usr/bin/python /usr/bin/python.bak

#添加python3的软链接
ln -s /usr/local/python3/bin/python3.6 /usr/bin/python

#测试是否安装成功了
python -V
</source>