centos7安装python3.7.8和pip3

亲测有效,针对 阿里云,华为云 centos 7 轻量服务器
Python ==> 3.7.8
pip ==> 3
一,打开python官网,找到下载Python的tgz文件,有两种方式下载 (版本可能更新,进官网核实为准)
 1,直接在windows系统下了完了,通过xtfp上传文件到/usr/local/下
 python官网下载地址:https://www.python.org/downloads/release/python-378/
 
 2、通过wget命令,至于命令后半段下载链接,直接右键点击Gzi......复制链接即可
wget https://www.python.org/ftp/python/3.7.8/Python-3.7.8.tgz二,解压文件,添加一些安装依赖
 在/usr/local/目录下解压 (习惯将这里当做文件下载,解压的地方,根据个人情况而定)
tar zxvf Python-3.7.8.tgz 安装依赖
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 gcc libffi-devel gcc make automake autoconf libtool libffi-devel 且需要安装一个包,libffi-devel为3.7版本需要的一个新的包,否则安装的时候报错
 ModuleNotFoundError: No module named '_ctypes'
yum install libffi-devel -y 进入解压目录
cd Python-3.7.8 进行初始配置
 注意:在这之前先将安装目录创建好,否则.......,这里我安装到 /usr/local/python3 目录下
mkdir /usr/local/python3 ./configure --prefix=/usr/local/python3  
在重新编译之前还需要在安装源文件中修改Modules/Setup.dist文件,将
#zlib zlibmodule.c -I$(prefix)/include -L$(exec_prefix)/lib -lz这行的注释去掉,变为:
zlib zlibmodule.c -I$(prefix)/include -L$(exec_prefix)/lib -lz 执行安装
make && make install 安装完成就配置软连接
ln -s /usr/local/python3/bin/python3 /usr/bin/python3ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3【centos7安装python3.7.8和pip3】 验证
 python3 -VPython 3.7.8 (default, Jul1 2020, 10:31:06)[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linuxType "help", "copyright", "credits" or "license" for more information.>>> pip3 -Vpip 20.1.1 from /usr/local/python3/lib/python3.7/site-packages/pip (python 3.7) 
 升级pip3
pip3 install --upgrade pip



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