CentOS7安装python3

1 - 安装前准备

yum -y groupinstall "Development tools"
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 install -y libffi-devel zlib1g-dev
yum install zlib* -y

2 - 下载安装包

wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tar.xz

3 - 解压安装包

tar -xvJf  Python-3.7.2.tar.xz

4 - 创建安装目录

mkdir /usr/local/python3 

5 - 编译安装

cd Python-3.7.2
./configure --prefix=/usr/local/python3 --enable-optimizations --with-ssl 
#第一个指定安装的路径,不指定的话,安装过程中可能软件所需要的文件复制到其他不同目录,删除软件很不方便,复制软件也不方便.
#第二个可以提高python10%-20%代码运行速度.
#第三个是为了安装pip需要用到ssl,后面报错会有提到.
make && make install

6 - 创建软链接

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

7 - 检查

python3 -V
pip3 -V

 

8 - 更新pip

?

1	pip3 install --upgrade pip