目录前言为什么必须强制main函数作为入口？总结前言 众所周知，python中没有所谓的main函数，但是网上经常有文章提到“ Python的main函数”和“建议编写main函数”。
I have seen the following methods to be used in several online examples, but haven\'t found any documentation on the recommended way of parsing an XML feed.
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