Django 今天发布了两个 bug 修复版本 Django 1.8.1 和 Django 1.7.8。 Django 1.8.1 修复了 1.8 的一些 bugs，同时优化了迁移框架：
Bug 修复Added support for serializing timedelta objects in
migrations (#24566). Restored proper parsing of the testserver command’s positional
arguments (fixture names) (#24571). Prevented TypeError in translation functions check_for_language() andget_language_bidi() when translations are deactivated (#24569). Fixed squashmigrations command when usingSeparateDatabaseAndState(#24278). Stripped microseconds from datetime values when using an older version of
the MySQLdb DB API driver as it does not support fractional seconds
(#24584). Fixed a migration crash when alteringManyToManyFields (#24513). Fixed a crash with QuerySet.update() on foreign keys to one-to-one fields
(#24578). Fixed a regression in the model detail view ofadmindocs when a model has a reverse foreign key
relation (#24624). Prevented arbitrary file inclusions in admindocs(#24625). Fixed a crash with QuerySet.update() on foreign keys to instances withuuid primary keys (#24611). Fixed database introspection with SQLite 3.8.9 (released April 8, 2015)
(#24637). Updated urlpatterns examples generated by startproject to
remove usage of referencing views by dotted path inurl() which is deprecated in Django 1.8
(#24635). Fixed queries where an expression was referenced in order_by(), but wasn’t
part of the select clause. An example query isqs.annotate(foo=F('field')).values('pk').order_by('foo')) (#24615). Fixed a database table name quoting regression (#24605). Prevented the loss of null/not null column properties during field
alteration of MySQL databases (#24595). Fixed JavaScript path of contrib.admin’s related field widget when using
alternate static file storages (#24655). Fixed a migration crash when adding new relations to models
(#24573). Fixed a migration crash when applying migrations with model managers on
Python 3 that were generated on Python 2 (#24701). Restored the ability to use iterators as queryset filter arguments
(#24719). Fixed a migration crash when renaming the target model of a many-to-many
relation (#24725). Removed flushing of the test database with --keepdb, which
prevented apps with data migrations from using the option (#24729). Fixed makemessages crash in some locales (#23271). Fixed help text positioning of contrib.admin fields that use theModelAdmin.filter_horizontal and filter_vertical options
(#24676). FixedAttributeError: function ‘GDALAllRegister’ not founderror when
initializing contrib.gis on Windows.
优化Django 1.7.8 主要是 bug 修复： Database introspection with SQLite 3.8.9 (released April 8, 2015)
(#24637). A database table name quoting regression in 1.7.2 (#24605). The loss of null/not null column properties during field alteration
of MySQL databases (#24595).
完整改进请看： 两个版本都已提供下载： Django 是 Python 编程语言驱动的一个开源模型-视图-控制器（MVC）风格的 Web 应用程序框架。使用 Django，我们在几分钟之内就可以创建高品质、易维护、数据库驱动的应用程序。
Django 框架的核心组件有： 用于创建模型的对象关系映射 为最终用户设计的完美管理界面 一流的 URL 设计 设计者友好的模板语言 缓存系统
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