datafile.py 文件源码

def is_first_chunk(self, idx, nb_chunks):

        if self.is_stream:
            cidx = numpy.searchsorted(self._chunks_in_sources, idx, 'right') - 1
            idx -= self._chunks_in_sources[cidx]
            if idx == 0:
                return True
        else:
            if idx == 0:
                return True
        return False