loader.py 文件源码

def walk(self, size):
        if self.eof: return None
        end_point = self.offset + 4 * size
        assert end_point <= self.size, \
        'Over-read {}'.format(self.path)

        float32_1D_array = np.memmap(
            self.path, shape = (), mode = 'r', 
            offset = self.offset,
            dtype='({})float32,'.format(size)
        )

        self.offset = end_point
        if end_point == self.size: 
            self.eof = True
        return float32_1D_array