# DataLoaders - Multiple files, and multiple rows per column with lazy evaluation

**URL:** <https://discuss.pytorch.org/t/dataloaders-multiple-files-and-multiple-rows-per-column-with-lazy-evaluation/11769>\
**Category:** Uncategorized\
**Created:** [January 2, 2018, 12:35pm UTC](https://discuss.pytorch.org/t/dataloaders-multiple-files-and-multiple-rows-per-column-with-lazy-evaluation/11769 "2018-01-02T12:35:16Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![chenyuntc](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/chenyuntc/32/299_2.png) [@chenyuntc](https://discuss.pytorch.org/u/chenyuntc)\
**Post date:** [January 2, 2018, 1:09pm UTC](https://discuss.pytorch.org/t/dataloaders-multiple-files-and-multiple-rows-per-column-with-lazy-evaluation/11769/2 "2018-01-02T13:09:24Z")

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`torch.utils.data.ConcatDataset` maybe helpful

[http://pytorch.org/docs/0.3.0/data.html#torch.utils.data.ConcatDataset](http://pytorch.org/docs/0.3.0/data.html#torch.utils.data.ConcatDataset)

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