linux安装python3

1、下载依赖、安装包

yum -y install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel zlib-devel gcc
wget https://www.python.org/ftp/python/3.7.8/Python-3.7.8.tgz

2、解压

tar -zxvf Python-3.7.8.tgz

3、编译安装

./configure --prefix=/usr/local/python3
make & make install

4、创建软连接

ln -s /usr/local/python3/bin/python3.7 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip3.7

5、使用：

python3

6、python升级pip

/usr/local/python3/bin/python3.7 -m pip install --upgrade pip

7、测试

[root@pythontest bin]# python3
Python 3.7.8 (default, May 7 2021, 10:47:38)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-44)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> exit()