Typically, a WSDL file is used to define the services the party provides, as well as the input and output messages and the corresponding types for the data that is passed in those messages.

通常，WSDL 文件用于定义所提供的服务、输入和输出消息，以及传递到这些消息中的数据所对应的类型。

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This is important in Python programs because file input and output are, by default, buffered; data isn't written as soon as you call a print statement but is instead written in chunks.

在Python程序中这很重要，因为在默认情况下，文件输入和输出是缓冲的；在调用print语句时，数据实际未被写入；相反，数据是成批写入的。

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The deleteFlatFile operation also takes the file name wrapped in the FlatFile data object as input and deletes the file with the given name from the output directory.

deleteFlatFile 操作也将包装在 FlatFile 数据对象中的文件名作为输出，然后从输出目录中删除给定名称的文件。

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