redhat安装python3.7

下载并解压：

1 wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tgz
2 tar -xzvf Python-3.7.2.tgz

进入目录：

cd Python-3.7.2

编译：

./configure --prefix=/usr/local/python3

 

安装：

make
make insatll

缺乏依赖包致使：

执行：yum -y install zlib*  安装依赖包便可

仍缺乏组件，没法导入_ctypes模块：

1 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
2 yum install libffi-devel -y

https://cpython-devguide.readthedocs.io/setup/#build-dependencies
注意：此步骤安装完成以后，须要从新编译文件

 

安装完成以后，python已经安装成功，可是须要配置环境变量，（若是不想配置环境变量能够在编译那一步将  --prefix=/usr/local/python3 这一部分去掉【没有测试】）

建立软链接便可，

1 [root@bing ~]# mv /usr/bin/python /usr/bin/python_bak
2 [root@bing ~]# ln -s /usr/local/python3/bin/python3 /usr/bin/python
3 [root@bing ~]# python
4 Python 3.7.2 (default, Feb 23 2019, 19:05:50) 
5 [GCC 4.4.7 20120313 (Red Hat 4.4.7-23)] on linux
6 Type "help", "copyright", "credits" or "license" for more information.
7 >>> exit()

 

 pip还没法使用

1 [root@bing ~]# PATH=$PATH:$HOME/bin:
2 [root@bing ~]# PATH=$PATH:$HOME/bin:/usr/local/python3/bin

配置完环境变量(在本次会话中)便可使用pip，最好是建立软链接

续；

安装过程当中出现：pip is configured with locations that require TLS/SSL, however the ssl modul

#从新编译安装 ./configure --prefix=/usr/local/python3 --enable-optimizations --with-ssl make make install #从新第三方库pymysql pip3 intall pymysql