How to know data type in mxnet

I used a numpydata type np.int8 in my mxnet code,
it raised an error showed below.
image
if I use ‘int8’ also get the same error.

if you update mxnet, int8 should be supported https://github.com/apache/incubator-mxnet/blob/master/python/mxnet/ndarray/ndarray.py#L64

Yep. I’m using version 0.9, maybe it’s key to it.