term.py 文件源码

def __le__(self, other):
        """
        >>> from rdflib.namespace import XSD
        >>> Literal('2007-01-01T10:00:00', datatype=XSD.dateTime
        ...     ) <= Literal('2007-01-01T10:00:00', datatype=XSD.dateTime)
        True
        """
        r = self.__lt__(other)
        if r:
            return True
        try:
            return self.eq(other)
        except TypeError:
            return NotImplemented