centos8安装python3.7
centos8安装python3.7
安装gcc编译器及依赖包
su - #切换到root用户，设置必须在root下完成
gcc --version #查看有没安装gcc
yum -y install gcc #安装gcc
#安装其他依赖包
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 libffi-devel
下载python3.7.0
#可在https://www.python.org/ftp/python/查询下载地址
wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz #下载，root用户默认下载到/root目录，其他用户到/home下面的目录。
解压Python-3.7.0.tgz
tar -zxvf Python-3.7.0.tgz
修改编译选项
vim Python-3.7.0/Modules/Setup.dist
去掉下面四行的注释,然后保存退出
#SSL=/usr/local/ssl
#_ssl _ssl.c \
# -DUSE_SSL -I$(SSL)/include -I$(SSL)/include/openssl \
# -L$(SSL)/lib -lssl -lcrypto
编译安装
mkdir /usr/local/python3
cd Python-3.7.0
./configure --prefix=/usr/local/python3 --enable-shared CFLAGS=-fPIC
make
make install
添加python库路径
vim /etc/ld.so.conf.d/python3.conf
写入下面的路径
/usr/local/python3/lib
执行生效
ldconfig #修改完成后，输入ldconfig 启动配置
建立软连接
rm -rf /usr/bin/python #删除原文件
rm -rf /usr/bin/pip #删除原文件
ln -s /usr/local/python3/bin/python3.7 /usr/bin/python
ln -s /usr/local/python3/bin/pip3.7 /usr/bin/pip
检查是否安装成功
python -V
pip install --upgrade pip #升级pip
