Javascript Execution Through Python

Question

I am attempting to create an html document parser with Python. I am very familiar with jQuery and I would like to use its traversing functionality to parse these html files and return the data gathered with jQuery back to my Python program.

Is there any way to use javascript scripts through Python? Or is this just a pipe dream?

Do you want to write the document parser as an exercise? If not, I see no reason why you wouldn't want to use the existing libraries. — paprika
– paprika, Commented Oct 6, 2010 at 15:46
As for "using JavaScript", I guess you mean to execute it. That means that you would have to write a JavaScript compiler/interpreter. Not an easy thing to do, but a totally different topic anyway. — paprika
– paprika, Commented Oct 6, 2010 at 15:48

jathanism · Accepted Answer · 2010-10-06 15:49:07Z

6

You might not need to do this. There is a Python module called PyQuery that directly emulates the API for jQuery. It works exactly as you would expect it to in almost every way. Give it a shot!

answered Oct 6, 2010 at 15:49

jathanism

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Pointy · Accepted Answer · 2010-10-06 15:48:52Z

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jQuery itself does not contain an HTML/XML parser at all. It uses the browser to do all its parsing. Thus, even if you figure out how to run Javascript from Python, it won't do you any good.

answered Oct 6, 2010 at 15:48

Pointy

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Skilldrick · Accepted Answer · 2010-10-06 15:49:17Z

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jQuery doesn't parse HTML - it traverses the DOM. You'd need an entire rendering engine (e.g. WebKit) if you wanted to use jQuery to work on the HTML.

answered Oct 6, 2010 at 15:49

Skilldrick

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jknair · Accepted Answer · 2010-10-06 15:56:06Z

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Well from your question it seems you will require python-javascript bridge like Pyjamas http://pyjs.org/ , PyPy http://codespeak.net/pypy/dist/pypy/doc/ , skulpt http://www.skulpt.org/ . Or my personal favorite PyXPCOM http://pyxpcomext.mozdev.org/ it installs a python backend directly into the firefox browser and using xpi stubs one can make bidirectioal calls ( mind you very complicated )

answered Oct 6, 2010 at 15:56

jknair

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intuited Over a year ago

That would work in the wrong "direction": Pyjamas lets you compile python code to be run by a web browser or other javascript interpreter. The OP wants to run javascript code in a Python program.

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