lxml-如何获取元素的最小xpath？

Question

tree.xpath("/exact/path/to/element") yields [<Element I want>] .

exact/path/to/element is procured by a call to tree.getroottree().getpath(element) .

If I find the minimal xpath to the element with eg Firebug, tree.xpath("//@minimal-descriptor") yields [<Element I want>] .

Question

How do I get the minimal xpath from element using lxml, or other Python library?

Answer 1

It is not possible to make lxml generate any xpath expression except the "absolute" one most importantly because there could be enormous amount of xpath expressions pointing to an element.

There are also several important points raised here:

• https://stackoverflow.com/questions/4171759/xpath-generator

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As far as I understand from the firebug documentation and the relevant "Split current option "Copy XPath" into two options for copying the absolute and relative XPath" issue , the "Copy Minimal XPath" functionality works only on the elements with id attribute set:

Copy Minimal XPath - Node with ID - Copies the minimal version of an XPath to the current node to the clipboard