jorisvandenbossche commented on issue #38675:
URL: https://github.com/apache/arrow/issues/38675#issuecomment-1810163119

   And note that this has not directly to do with being nested, also for a flat 
list of pytorch tensors, you will get the same issue:
   
   ```
   In [3]: pa.array([torch.zeros(5), torch.zeros(5)])
   ...
   ArrowInvalid: Could not convert tensor([0., 0., 0., 0., 0.]) with type 
Tensor: did not recognize Python value type when inferring an Arrow data type
   ```
   
   (but nesting in a dictionary makes it certainly harder to work around this, 
for the non-nested version above you can create a ListArray or 
FixedShapeTensorArray from a single dim+1 torch tensor)


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