Linux下的Python3的安装

Linux下的Python3的安装

参考资料：
http://www.cnblogs.com/wupeiqi/articles/5433925.html

1、安装依赖包

yum -y install make gcc-c++ cmake bison-devel ncurses-devel  readline-devel  libaio-devel perl libaio wget lrzsz vim libnuma* bzip2 xz libffi-devel "Development tools"
yum -y install  zlib-devel bzip2-devel openssl-devel  sqlite-devel  tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

2、下载源码

网址：https://www.python.org/ftp/python/

例如： 
[root@db142 local]# cd /opt/
[root@db142 opt]# wget https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tar.xz
[root@db142 opt]# cd Python-3.7.3
[root@db142 Python-3.7.3]# ./configure 
[root@db142 Python-3.7.3]# make all
[root@db142 Python-3.7.3]# make install
[root@db142 Python-3.7.3]# python -V
Python 2.6.6
[root@db142 Python-3.7.3]# which python
/usr/bin/python
[root@db142 Python-3.7.3]# mv /usr/bin/python /usr/bin/python2.6.6
[root@db142 Python-3.7.3]# ln -s /usr/local/bin/python3.7 /usr/bin/python
防止yum执行异常，修改yum使用的Python版本
[root@db142 Python-3.7.3]# head -1 /usr/bin/yum  
#!/usr/bin/python2.6.6
[root@db142 Python-3.7.3]# 
将头部 #!/usr/bin/python 修改为 #!/usr/bin/python2.6
[root@db142 Python-3.7.3]# python
Python 3.7.3 (default, Apr 19 2019, 00:50:41) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-23)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
[root@db142 Python-3.7.3]#