[教程]Centos7 安装python3 pip3 sqlite3
写在前面
说明，不是我原创，只是搜索引擎的搬运工，集合里几个帖子，完成了自己的安装，给自己留个笔记
# 编译使用
yum install -y gcc make
# python编译依赖
yum install -y zlib-devel libffi-devel openssl-devel bzip2-devel ncurses-devel sqlite-devel gdbm-devel xz-devel tk-devel readline-devel
编译python3
wget https://www.python.org/ftp/python/3.7.5/Python-3.7.5.tar.xz
tar -zxvf Python-3.7.5.tar.xz
mkdir /usr/local/python3 #创建编译安装目录
cd Python-3.7.5
./configure --prefix=/usr/local/python3 --enable-optimizations #不加后面这个，编译后使用时有tls的问题
make && make install
创建软连接
ln -s /usr/local/python3/bin/python3 /usr/local/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/local/bin/pip3
验证是否成功
python3 -V
pip3 -V
在CentOS7上安装sqlite3
下载软件
wget https://www.sqlite.org/2019/sqlite-autoconf-3270100.tar.gz
解压
tar zxvf sqlite-autoconf-3270100.tar.gz
cd sqlite-autoconf-3270100
编译及安装
./configure -prefix=/opt/sqlite3
make && make install
成功安装，最后输出如下信息：
----------------------------------------------------------------------
Libraries have been installed in:
/opt/sqlite3/lib
If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the '-LLIBDIR'
flag during linking and do at least one of the following:
- add LIBDIR to the 'LD_LIBRARY_PATH' environment variable
during execution
- add LIBDIR to the 'LD_RUN_PATH' environment variable
during linking
- use the '-Wl,-rpath -Wl,LIBDIR' linker flag
- have your system administrator add LIBDIR to '/etc/ld.so.conf'
See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------
信息显示sqlite3的安装路径是：/opt/sqlite3/lib
特别注意建议添加sqlite3环境变量：
add LIBDIR to the ‘LD_LIBRARY_PATH’ environment variable during execution
添加环境变量：
export LD_LIBRARY_PATH=/opt/sqlite3
验证是否能正常运行：
/opt/sqlite3/bin/sqlite3
执行上面命令，正常运行输出下面信息：
SQLite version 3.27.1 2019-02-08 13:17:39
Enter ".help" for usage hints.
Connected to a transient in-memory database.
Use ".open FILENAME" to reopen on a persistent database.
sqlite>
输入命令.quit退出sqlite3
sqlite> .quit
接下重新编译安装Python3
首先修改python3源码的setup.py文件的下面部分，找到sqlite_inc_paths进行修改，如下所示：
sqlite_inc_paths = [ '/usr/include',
'/opt/sqlite3/include', # 添加这一行
'/usr/include/sqlite',
'/usr/include/sqlite3',
'/usr/local/include',
'/usr/local/include/sqlite',
'/usr/local/include/sqlite3',
]
接下进入源目录重新编译python
cd /usr/local/python3 #进Python编译安装目录
make && make install
验证安装是否成功：
python3
import sqlite3
未报错则表示安装成功
来自 <https://zhuanlan.zhihu.com/p/50240932>
—————————————
发现了一个可以有效解决当前django必须使用sqlite3.8.3以上版本的问题
locate django将会输出大量包含django关键字的目录文件，可以看到django安装在哪些路径下，在我的系统上，需要找到/…/lib/python3.6/site-packages/django/db/backends/sqlite3/base.py这个脚本，django判断当前使用的sqlite版本的代码就在这里，找到以下代码块，注释掉那一行代码并更改：
def check_sqlite_version():
# if Database.sqlite_version_info
< (3, 8, 3):
if Database.sqlite_version_info <
(3, 6, 3):
raise
ImproperlyConfigured(‘SQLite 3.8.3 or later is required(found %s).’ %
Database.sqlite_version)
check_sqlite_version()
再次尝试,成功
来自 <http://coollsx.com/resolve-django-for-sqlite-3-8-3-or-later-is-required/>