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来自字符串源的Python xml ElementTree？

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问题：来自字符串源的Python xml ElementTree？
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回答 1
回答 2
回答 3

问题：来自字符串源的Python xml ElementTree？

ElementTree.parse从文件读取，如果字符串中已经有XML数据，该如何使用？

也许我在这里错过了一些东西，但是必须有一种使用ElementTree的方法，而无需将字符串写出到文件中并再次读取它。

xml.etree.elementtree

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The ElementTree.parse reads from a file, how can I use this if I already have the XML data in a string?

Maybe I am missing something here, but there must be a way to use the ElementTree without writing out the string to a file and reading it again.

xml.etree.elementtree

回答 0

如果您xml.etree.ElementTree.parse用于从文件中进行解析，则可以使用xml.etree.ElementTree.fromstring从文本中进行解析。

参见xml.etree.ElementTree

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If you’re using xml.etree.ElementTree.parse to parse from a file, then you can use xml.etree.ElementTree.fromstring to parse from text.

See xml.etree.ElementTree

回答 1

您可以将文本解析为字符串，从而创建一个Element，并使用该Element创建ElementTree。

import xml.etree.ElementTree as ET
tree = ET.ElementTree(ET.fromstring(xmlstring))

我刚遇到这个问题，而文档虽然完整，但对于parse()和fromstring()方法之间用法的区别并不是很简单。

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You can parse the text as a string, which creates an Element, and create an ElementTree using that Element.

import xml.etree.ElementTree as ET
tree = ET.ElementTree(ET.fromstring(xmlstring))

I just came across this issue and the documentation, while complete, is not very straightforward on the difference in usage between the parse() and fromstring() methods.

回答 2

你需要 xml.etree.ElementTree.fromstring(text)

from xml.etree.ElementTree import XML, fromstring
myxml = fromstring(text)
点击查看英文原文

You need the xml.etree.ElementTree.fromstring(text)

from xml.etree.ElementTree import XML, fromstring
myxml = fromstring(text)

回答 3

io.StringIO是将XML放入xml.etree.ElementTree的另一种选择：

import io
f = io.StringIO(xmlstring)
tree = ET.parse(f)
root = tree.getroot()

因此，它不会影响假定的XML声明tree（尽管ElementTree.write（）需要此声明）。请参见如何使用xml.etree.ElementTree编写XML声明。

点击查看英文原文

io.StringIO is another option for getting XML into xml.etree.ElementTree:

import io
f = io.StringIO(xmlstring)
tree = ET.parse(f)
root = tree.getroot()

Hovever, it does not affect the XML declaration one would assume to be in tree (although that’s needed for ElementTree.write()). See How to write XML declaration using xml.etree.ElementTree.