parameters: (self, tag, attrs)
docstring: called at the start of every element, tag is the name of
             the element, attrs is a dictionary of the element's attributes
docstring_summary: called at the start of every element, tag is the name of
             the element, attrs is a dictionary of the element's attributes
docstring_tokens: called at the start of every element tag is the name of the element attrs is a dictionary of the element s attributes
function: def startElement(self, tag, attrs):
          """called at the start of every element, tag is the name of
             the element, attrs is a dictionary of the element's attributes"""
          pass
function_tokens: def startElement ( self , tag , attrs ) : pass