data¶ Functions extract_batch_size Unpack a batch to find a torch.Tensor. has_len_all_ranks Checks if a given object has __len__ method implemented on all ranks. lightning.pytorch.utilities.data.extract_batch_size(batch)[source]¶ Unpack a batch to find a torch.Tensor. Return type int Returns len(tensor) when found, or 1 when it hits an empty or non iterable. lightning.pytorch.utilities.data.has_len_all_ranks(dataloader, strategy, allow_zero_length_dataloader_with_multiple_devices=False)[source]¶ Checks if a given object has __len__ method implemented on all ranks. Return type TypeGuard[Sized]