1.安装依赖包
1）首先安装gcc编译器，gcc有些系统版本已经默认安装，通过 gcc --version 查看，没安装的先安装gcc，yum -y install gcc
2）安装其它依赖包，（注：不要缺少，否则有可能安装python出错，python3.7.0以下的版本可不装 libffi-devel ）
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
2.下载python3.7.4源码，根据需求下载
1）在https://www.python.org/ftp/python/中选择自己需要的python源码包，我下载的是python3.7.0
(大家也可以去https://www.python.org官网首页下载，找到downloads，就可以选择想要的版本下载了)
1）下载
wget https://www.python.org/ftp/python/3.7.4/Python-3.7.4.tgz
2）解压Python-3.7.4.tgz
tar -zxvf Python-3.7.4.tgz
3.建立一个空文件夹，用于存放python3程序
mkdir /python3
4.执行配置文件，编译，编译安装
cd python3
./configure --prefix=/python3/python3.7.4 --with-ssl
make && make install
【问题解决】:no acceptable C compiler found in $PATH when installing python
执行安装：apt-get install build-essential
【问题解决】：zipimport.ZipImportError: can't decompress data; zlib not available
sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev \
libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
xz-utils tk-dev
安装完成没有提示错误便安装成功了
5.建立软连接
ln -s /python3/python3.7.4/bin/python3 /usr/bin/python3
ln -s /python3/python3.7.4/bin/pip3 /usr/bin/pip3
6.测试一下python3是否可以用
python3 -V
pip3 -V
将pip升级到最新版本：
python3 -m pip install --upgrade pip
【问题解决】pip安装时出现"return Command 'lsb_release -a' returned non-zero exit status 1"
删除lsb_release文件可解决此问题
sudo rm /usr/bin/lsb_release
可参考连接：https://github.com/pypa/pip/issues/4924
8.Wagtail安装
mkdir wagtail
cd wagtail
python3 -m venv env
source env/bin/activate
pip3 install wagtail
wagtail start mysite
cd mysite
pip3 install -r requirements.txt
python3 manage.py migrate
python3 manage.py createsuperuser
python3 manage.py runserver
可参照
9.编写脚本让Blog服务后台运行
#!/bin/bash
cd /root/wagtail/mysite
nohup python3 manage.py runserver 127.0.0.1:8000 &