Practicalities: DRY 'ing up your code and best practices (16:09).
实用性：DRY你的代码，并应用到实践中去(16：09)。
With automated migration, teams can regularly perform dry runs that deploy the code into a clean "production class" environment, where automated unit and system-level tests may be executed.
在自动化移植中，团队可以将代码转入干净的“生产级”环境，在那里可以执行自动化的单元和系统级测试。
Django strictly observes the Don't Repeat Yourself (DRY) principle, whereby every distinct piece of code or data lives in only one place.
Django严格遵循Don ' t Repeat Yourself (DRY)原则，因此每个不同的代码片段或数据仅在一个位置上出现。
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