在centos下实现python2 和 python3并存

小灰灰 2022-03-01 07:05 226阅读 0赞

Centos7 默认携带python 2.7

Centos7 安装python 3.5.2

Linux常用包安装方式

Yum 安装

Yum list 列出所有可以yum安装的包

Yum search package 查询package包

Yum install package 安装package包

Yum -y install package 安装package包，所有的选项都以y提交

Mariadb yum安装

1、安装mariadb-service

Yum -y install mariadb-service

2、安装mariadb-devel

Yum -y install mariadb-devel

3、Systemctl start（stop/restart/status） mariadb.service 启动mariadb

4、Systemctl stop firewalled 停止防护墙

5、Mysql -u root -p123

编译安装

1、下载安装包

wget [https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz][https_www.python.org_ftp_python_3.6.2_Python-3.6.2.tar.xz]

2、安装依赖包

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

Yum -y install gcc\*

3、解压tar包

tar -Jxvf Python-3.6.2.tar.xz

4、切入解压后的包当做进行安装配置

./configure prefix=/usr/local/python3

5、编译和编译安装

Make && make install

6、创建软连接

将可执行文件创建类似快捷方式，放到/usr/bin目录下,创建软连接必须用绝对路径

Ln -s /usr/local/python3/bin/python3 /usr/bin/python3

Ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3

7、配置完成，顺带测试

8、Pip3 install sqlalchemy

9、Pip3 install pymysql

快照管理：

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[https_www.python.org_ftp_python_3.6.2_Python-3.6.2.tar.xz]: https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz
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