code: def get_schemaloc_pairs(node):
      
      schemalocs = node.attrib[TAG_SCHEMALOCATION]
      l = schemalocs.split()
      return zip(l[::2], l[1::2])
docs: Parses the xsi:schemaLocation attribute on `node`.
  
      Returns:
          A list of (ns, schemaLocation) tuples for the node.
  
      Raises:
          KeyError: If `node` does not have an xsi:schemaLocation attribute.