basic.py 文件源码

def make_node(self, x, index):
        assert isinstance(x.type, TypedListType)
        if not isinstance(index, Variable):
            if isinstance(index, slice):
                index = Constant(SliceType(), index)
                return Apply(self, [x, index], [x.type()])
            else:
                index = T.constant(index, ndim=0, dtype='int64')
                return Apply(self, [x, index], [x.ttype()])
        if isinstance(index.type, SliceType):
            return Apply(self, [x, index], [x.type()])
        elif isinstance(index, T.TensorVariable) and index.ndim == 0:
            assert index.dtype == 'int64'
            return Apply(self, [x, index], [x.ttype()])
        else:
            raise TypeError('Expected scalar or slice as index.')