# example.py
# 
# Example of XML namespace handling

from xml.etree.ElementTree import parse

class XMLNamespaces:
    def __init__(self, **kwargs):
        self.namespaces = {}
        for name, uri in kwargs.items():
            self.register(name, uri)
    def register(self, name, uri):
        self.namespaces[name] = '{'+uri+'}'
    def __call__(self, path):
        return path.format_map(self.namespaces)

doc = parse('sample.xml')
ns = XMLNamespaces(html='http://www.w3.org/1999/xhtml')

e = doc.find(ns('content/{html}html'))
print(e)

text = doc.findtext(ns('content/{html}html/{html}head/{html}title'))
print(text)