centos7跑django3 sqlite3 问题

使用django3.X版本在centos7系统运行抛错

# [django can't find new sqlite version? (SQLite 3.8.3 or later is required (found 3.7.17))](https://stackoverflow.com/questions/55674176/django-cant-find-new-sqlite-version-sqlite-3-8-3-or-later-is-required-found)

刚刚开始抛当前版本不支持。我升级sqlite3的版本后，验证了 sqlite3 的版本为我安装的版本。也验证了python3中导入的 sqlite3 版本也是我安装的版本。继续运行django项目，继续抛以下错误：

"/usr/local/python3/lib/python3.8/site-packages/django/db/backends/sqlite3/base.py" 602L, 25741C written
    fn(*args, **kwargs)
  File "/usr/local/python3/lib/python3.8/site-packages/django/core/management/commands/runserver.py", line 121, in inner_run
    self.check_migrations()
  File "/usr/local/python3/lib/python3.8/site-packages/django/core/management/base.py", line 459, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/migrations/executor.py", line 18, in __init__
    self.loader = MigrationLoader(self.connection)
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/migrations/loader.py", line 53, in __init__
    self.build_graph()
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/migrations/loader.py", line 216, in build_graph
    self.applied_migrations = recorder.applied_migrations()
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/migrations/recorder.py", line 77, in applied_migrations
    if self.has_table():
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/migrations/recorder.py", line 55, in has_table
    with self.connection.cursor() as cursor:
  File "/usr/local/python3/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/backends/base/base.py", line 259, in cursor
    return self._cursor()
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/backends/base/base.py", line 235, in _cursor
    self.ensure_connection()
  File "/usr/local/python3/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/backends/base/base.py", line 219, in ensure_connection
    self.connect()
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/utils.py", line 90, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/backends/base/base.py", line 219, in ensure_connection
    self.connect()
  File "/usr/local/python3/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/backends/base/base.py", line 200, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/usr/local/python3/lib/python3.8/site-packages/django/utils/asyncio.py", line 26, in inner
    return func(*args, **kwargs)
  File "/usr/local/python3/lib/python3.8/site-packages/django/db/backends/sqlite3/base.py", line 215, in get_new_connection
    create_deterministic_function('django_date_extract', 2, _sqlite_datetime_extract)
django.db.utils.NotSupportedError: deterministic=True requires SQLite 3.8.3 or higher

以为是动态链接库没有更新又重新安装了一把python3.8、发现结果还是一样不能运行成功
升级之后由一个不能被支持的参数引发NotSupportError，说明django虽然获取到了>=3.8.3版本的sqlite，但是部分方法仍然不能支持新特性、

如此这般，只能走另外一条途径解决问题。不依赖系统提供的sqlite3 使用 pysqlite3 和 pysqlite3-binary 库来操作。首先需要安装这两个库

pip3 install pysqlite3

pip3 install pysqlite3-binary

修改db代码导入库

vi /usr/local/python3/lib/python3.8/site-packages/django/db/backends/sqlite3/base.py
# 修改内容
# from sqlite3 import dbapi2 as Database (注释掉这段)
from pysqlite3 import dbapi2 as Database # 启用pysqlite3
# :wq 保存即可

然后可运行 python3 manage.py runserver 即成功运行