code: def assign_literal(element, value):
          u
          # Searches for a conversion method specific to the type of value.
          helper = helpers.CAST_DICT.get(type(value), str)
  
          # Removes all children and attributes.
          element.clear()
          element.text = helper(value)
docs: u"""Assigns a literal.
  
          If a given node doesn't exist, it will be created.
  
          :param etree.Element element: element to which we assign.
          :param value: the value to assign