在 python 中将线条读入图形时，RDFlib 接受哪些不同的格式? [英] What different formats does RDFlib accept when reading lines into a graph in python?

问题描述

RDFlib 是否可以将 xml 代码行放入 Python 图形中?我知道三元组通常与 RDFlib 一起使用，但如果我不必将它们从 XML 转换为 Turtle，它将节省大量工作.

Can RDFlib take in lines of xml code to be put into a graph in python? I Know triples are generally what is used with RDFlib, but if I didn't have to convert them from XML to Turtle it would save a lot of work.

推荐答案

假设当您说xml 代码"时，您实际上指的是 RDF/XML，并且您拥有整个 RDF/XML 文档，而不仅仅是它的一个片段，那么是的，RDFlib 接受它.文档页面 加载和保存 RDF 以 N-Triples 中的示例开始，但是提到如何指定其他格式:

Assuming that when you say "xml code" you actually mean RDF/XML, and that you have the entire RDF/XML document, not just a snippet of it, then yes, RDFlib accepts it. The documentation page Loading and saving RDF starts with an example in N-Triples, but mentions how other formats are specified:

RDF 数据具有多种语法(xml、n3、ntriples、trix 等)，您可能想读.最简单的格式是 ntriples，一种基于行的格式.用这两行在当前目录下创建文件demo.nt:

Reading an NT file

RDF data has various syntaxes (xml, n3, ntriples, trix, etc) that you might want to read. The simplest format is ntriples, a line-based format. Create the file demo.nt in the current directory with these two lines:

<http://bigasterisk.com/foaf.rdf#drewp> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
<http://bigasterisk.com/foaf.rdf#drewp> <http://example.com/says> "Hello world" .

你需要告诉RDFLib解析什么格式，使用format关键字参数给parse()，你可以传递一个mime-type 或名称(可用解析器列表 可用).如果您不确定您的文件是什么格式，您可以使用 rdflib.util.guess_format() 将根据文件扩展名猜测.

You need to tell RDFLib what format to parse, use the format keyword-parameter to parse(), you can pass either a mime-type or the name (a list of available parsers is available). If you are not sure what format your file will be, you can use rdflib.util.guess_format() which will guess based on the file extension.

在您的情况下，您只需要使用 xml(实际上意味着 RDF/XML)格式:

In your case, you just need to use the xml (which actually means RDF/XML) format:

>>> g.parse("demo.rdf", format="xml")

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