# What's wrong with this data\_loder?

**URL:** <https://discuss.pytorch.org/t/whats-wrong-with-this-data-loder/101601>\
**Category:** Uncategorized\
**Created:** [November 4, 2020, 12:36pm UTC](https://discuss.pytorch.org/t/whats-wrong-with-this-data-loder/101601 "2020-11-04T12:36:17Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![rui\_zhou](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/rui_zhou/32/30441_2.png) [@rui\_zhou](https://discuss.pytorch.org/u/rui_zhou)\
**Post date:** [November 4, 2020, 12:36pm UTC](https://discuss.pytorch.org/t/whats-wrong-with-this-data-loder/101601/1 "2020-11-04T12:36:17Z")

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![bug13](https://discuss.pytorch.org/uploads/default/original/3X/8/8/88d7f7a082d5686b270fd10a3fde3513811fc112.png) ![bug12](https://discuss.pytorch.org/uploads/default/original/3X/a/f/afae1ff9bcc7e390dd9c507b34c5615f6d90cf6f.png) ![bug11](https://discuss.pytorch.org/uploads/default/original/3X/d/b/dbb89ddfa0639748d62ab7546165ec3798a36525.png)  
what’s wrong with this data\_loder?

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**Author:** ![ptrblck](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/ptrblck/32/1823_2.png) [@ptrblck](https://discuss.pytorch.org/u/ptrblck)\
**Post date:** [November 5, 2020, 3:04am UTC](https://discuss.pytorch.org/t/whats-wrong-with-this-data-loder/101601/2 "2020-11-05T03:04:46Z")

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It seems you might be using a 3rd party `DataLoader` implementation defined in `pytorch-deeplab-xception/dataloaders/ __init__.py`, which raises the `NotImplementedError`, so should check this file and make sure this class is used as expected.

PS: you can post code snippets by wrapping them into three backticks ```, which makes debugging easier. 😉

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**Author:** ![rui\_zhou](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/rui_zhou/32/30441_2.png) [@rui\_zhou](https://discuss.pytorch.org/u/rui_zhou)\
**Post date:** [November 5, 2020, 10:36am UTC](https://discuss.pytorch.org/t/whats-wrong-with-this-data-loder/101601/3 "2020-11-05T10:36:52Z")

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Thanks a lot.

 ![bug3](https://discuss.pytorch.org/uploads/default/original/3X/5/d/5df390320508cba1d504687cfeb07e676a2f445f.jpeg) It’s this one, but why the data can not loaded in?

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**Author:** ![ptrblck](https://discuss.pytorch.org/user_avatar/discuss.pytorch.org/ptrblck/32/1823_2.png) [@ptrblck](https://discuss.pytorch.org/u/ptrblck)\
**Post date:** [November 5, 2020, 10:39am UTC](https://discuss.pytorch.org/t/whats-wrong-with-this-data-loder/101601/4 "2020-11-05T10:39:49Z")

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Could you post an executable code snippet, so that we could take a look, please?