sortedlist.py 文件源码

def __add__(self, that):
        """
        Return a new sorted list containing all the elements in *self* and
        *that*. Elements in *that* do not need to be properly ordered with
        respect to *self*.
        """
        values = reduce(iadd, self._lists, [])
        values.extend(that)
        return self.__class__(values, load=self._load)