[GitHub] [incubator-mxnet] barry-jin commented on pull request #20029: [v2.0] Make npx.savez support list and dict

[GitBox <gi...@apache.org>]

barry-jin commented on pull request #20029:
URL: https://github.com/apache/incubator-mxnet/pull/20029#issuecomment-799600521


   > Have you tested this in numpy? The doc says
   > 
   > > argsArguments, optional
   > > ```
   > > Arrays to save to the file. Since it is not possible for Python to know the names of the arrays outside savez, the arrays will be saved with names “arr_0”, “arr_1”, and so on. These arguments can be any expression.
   > > ```
   > > 
   > > 
   > > kwdsKeyword arguments, optional
   > > ```
   > > Arrays to save to the file. Arrays will be saved in the file with the keyword names.
   > > ```
   > 
   > https://numpy.org/doc/stable/reference/generated/numpy.savez.html
   
   For official numpy, it looks like it will merge the input list into one array: 
   ```
   >>> import numpy as np
   >>> x = np.arange(4)
   >>> y = np.zeros(4)
   >>> np.savez('dataset.npz', [x, y])
   >>> np.load('dataset.npz')['arr_0']
   array([[0., 1., 2., 3.],
          [0., 0., 0., 0.]])
   ```


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