问题描述：

    在centos7系统上执行python3.6 manage.py startapp polls创建app是报错：

        django.core.exceptions.ImproperlyConfigured: SQLite 3.8.3 or later is required (found 3.7.17).


 解决方法一：给现有django降级

    1. 卸载现有django: pip3 uninstall django

    2. 安装低版本Django: pip3 install django ==2.2.11

解决方法二：升级sqlite3

    1. 系统默认的sqlite3版本：

     [root@mysql ~]# /usr/bin/sqlite3 --version

      3.7.17 2013-05-20 00:56:22 118a3b35693b134d56ebd780123b7fd6f1497668

    2. 安装sqlite3最新版SQLite 3.8.3

    [root@mysql ~]# wget https://www.sqlite.org/2019/sqlite-autoconf-3270200.tar.gz

    [root@mysql ~]# tar -zxvf sqlite-autoconf-3270200.tar.gz

    [root@mysql ~]# cd sqlite-autoconf-3270200

    [root@mysql sqlite-autoconf-3270200]# make && make install

    3. 删除文件夹及安装包

    [root@mysql ~]# rm -rf sqlite-autoconf-3270200 sqlite-autoconf-3270200.tar.gz

    4. 检查安装版本

    新版本

    [root@mysql ~]# /usr/local/bin/sqlite3 --version

    3.27.2 2019-02-25 16:06:06 bd49a8271d650fa89e446b42e513b595a717b9212c91dd384aab871fc1d0f6d7

    旧版本

    [root@mysql ~]# /usr/bin/sqlite3 --version

    3.7.17 2013-05-20 00:56:22 118a3b35693b134d56ebd780123b7fd6f1497668

    5. 更新sqlite3

    [root@mysql ~]# mv /usr/bin/sqlite3 /usr/bin/sqlite3_3.7.17

    [root@mysql ~]# ln -s /usr/local/bin/sqlite3 /usr/bin/sqlite3

    [root@mysql ~]# /usr/bin/sqlite3 --version

    3.27.2 2019-02-25 16:06:06 bd49a8271d650fa89e446b42e513b595a717b9212c91dd384aab871fc1d0f6d7

    6. 也可写入本地环境文件.bashrc，生效：

    export LD_LIBRARY_PATH="/usr/local/lib"