From mxnet import nd

Hi, everyone

I am new to Python, and when reading the deep learning book, I met some problem.

from mxnet import nd

For the above code, why we can short ndarray for nd? Is this pre-defined by the Mxnet library? Or it is defined somewhere in our own code?

Second question is, before writing the above line, do we need to write import mxnet first?


First: it’s because in the of the top level mxnet package, the ndarray package is imported as nd. Take a look at the source code here:

Second: you do not need to do import mxnet first. It will work if you import nd directly as long as you have from mxnet.

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