The EBNF sample uses the particular variant of SimpleParse, which is a Python library that transforms these declarations into state tables that can be used by mx.TextTools.
EBNF 样本使用专门变体 SimpleParse ,这是一个 Python 库,它将这些声明转换成可以被 mx.TextTools 所使用的状态表。
This becomes a problem for more pesky items such as files and database tables, where if you need to modify the state you must be extra careful to cleanup your tracks after the test is completed.
这对于文件和数据库表等麻烦的项目来说成为一个问题,因为在这些情况下,如果您需要修改状态,那么您必须更小心地在测试完成之后进行一些清理操作。
You will be deleting some records, and it will be helpful to be able to restore the tables to a default state for later testing.
您将要删除一些记录,而能够把表恢复到默认状态对于稍后的测试将十分有用。
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