util.py 文件源码

def __init__(self, *args, **kwds):
            """ A dictionary which maintains the insertion order of keys. """

            if len(args) > 1:
                raise TypeError('expected at most 1 arguments, got %d' % len(args))
            try:
                self.__end
            except AttributeError:
                self.clear()
            self.update(*args, **kwds)