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# XPath "function" elements that transform their subpaths
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import xpath
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##### Functions
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funcs = {}
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def process(path):
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if path == []: return path
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path[1:] = process(path[1:])
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name = path[0].name
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if name.startswith('_') and name in funcs: return funcs[name](path)
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else: return path
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#### XPath functions
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# Function names must start with _ to avoid collisions with real tags
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# Functions take arguments (path)
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def _for(items):
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return None
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funcs['_for'] = _for
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