# Use 'zip' to concat two dataset

**URL:** <https://discuss.ray.io/t/use-zip-to-concat-two-dataset/7331>\
**Category:** Uncategorized\
**Created:** [August 26, 2022, 6:10am UTC](https://discuss.ray.io/t/use-zip-to-concat-two-dataset/7331 "2022-08-26T06:10:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tingting\_qi](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/tingting_qi/32/3021_2.png) [@tingting\_qi](https://discuss.ray.io/u/tingting_qi)\
**Post date:** [August 26, 2022, 6:10am UTC](https://discuss.ray.io/t/use-zip-to-concat-two-dataset/7331/1 "2022-08-26T06:10:11Z")

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when i want to concate two dataset,the error happened:  
ValueError: Cannot zip \<class ‘ray.data.impl.pandas\_block.PandasBlockAccessor’\> with block of type \<class ‘pyarrow.lib.Table’\>

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<div class="post-metadata">

**Author:** ![matthewdeng](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ray.io/matthewdeng/32/1446_2.png) [@matthewdeng](https://discuss.ray.io/u/matthewdeng)\
**Post date:** [August 26, 2022, 11:09pm UTC](https://discuss.ray.io/t/use-zip-to-concat-two-dataset/7331/2 "2022-08-26T23:09:31Z")

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Hey @tingting_qi, could you provide a repro for this?