sax.py 文件源码

def __init__(self, element_or_tree, content_handler):
        try:
            element = element_or_tree.getroot()
        except AttributeError:
            element = element_or_tree
        self._element = element
        self._content_handler = content_handler
        from xml.sax.xmlreader import AttributesNSImpl as attr_class
        self._attr_class = attr_class
        self._empty_attributes = attr_class({}, {})