Hi I m getting an `DagsterInvalidDefinitionError` when I run

Question

Hi I m getting an `DagsterInvalidDefinitionError` when I run code samples from the documentation Details in thread

Mike Jones · Answer

```dagster core errors DagsterInvalidDefinitionError Asset key AssetKey downstream asset is defined multiple times Definitions found in modules test File C Users mike jones Projects dagster venv lib site packages dagster grpc server py line 227 in init self loaded repositories = LoadedRepositories File C Users mike jones Projects dagster venv lib site packages dagster grpc server py line 101 in init loadable targets = get loadable targets File C Users mike jones Projects dagster venv lib site packages dagster grpc utils py line 33 in get loadable targets else loadable targets from python file python file working directory File C Users mike jones Projects dagster venv lib site packages dagster core workspace autodiscovery py line 27 in loadable targets from python file return loadable targets from loaded module loaded module File C Users mike jones Projects dagster venv lib site packages dagster core workspace autodiscovery py line 113 in loadable targets from loaded module asset group from module assets = AssetGroup from modules module File C Users mike jones Projects dagster venv lib site packages dagster core definitions asset group py line 336 in from modules assets source assets = assets and source assets from modules modules extra source assets File C Users mike jones Projects dagster venv lib site packages dagster core definitions load assets from modules py line 61 in assets and source assets from modules raise DagsterInvalidDefinitionError ```

Mike Jones · Answer

```dagit==1 0 2 dagster==1 0 2 dagster aws==0 16 2 dagster gcp==0 16 2 dagster graphql==1 0 2 dagster pandas==0 16 2```

Aaron · Answer

What happens if you try renaming the file to something else Looks like there may be some conflict based on the name of the file

Mike Jones · Answer

I just renamed test py to different name py and I get the same error

Aaron · Answer

Yep sorry my bad I get the same error if I try and run the code snippet looks it it should work so I m at a loss disappointed

claire · Answer

Hi Mike This is a nuance with `with resources` this function will actually return your assets but bound to the resources provided This is the cause of the error because the file now contains both the original assets and the assets bound to resources One thing you can do here is put your `with resources` call within a repository ``` repository def my repository return with resources upstream asset downstream asset resource defs= io manager s3 pickle io manager s3 s3 resource ``` Or just bind the resources directly to your asset ``` asset resource defs= def my asset ```

claire · Answer

For now I can file an issue to clarify this error message

claire · Answer

< Dagster Bot> clarify asset defined multiple times error

Dagster Bot · Answer

Invalid command Did you mean to create an issue or a discussion Try ` dagster bot lt issue|docs|discussion gt lt title gt `

claire · Answer

< Dagster Bot> issue clarify asset defined multiple times error

Dagster Bot · Answer

Created issue at <https github com dagster io dagster issues 9331>

Mike Jones · Answer

Makes sense Thank you

Frank Lu · Answer

this is part of the sample code on the io page maybe we should update the documentation <https docs dagster io concepts io management io managers applying io managers to assets> also the solutions provided aren t really elegant disappointed

claire · Answer

Thanks < Frank Lu> for pointing this out I ve updated the issue to point out the IO manager page Which solutions do you mean are inelegant

Frank Lu · Answer

i m referring to stuffing the resource defs in the decorators If i have 20 assets it ll be a lot of repeated code I can also put that in repository py with your other suggestion but it s not very intuitive because we have all assets under an asset folder in our projects but we ll probably go with the second option thanks Ideally if we can do the docs code it ll be really nice

claire · Answer

Makes sense thanks for the feedback

sandy · Answer

not sure if this is helpful but you could also consider using `with resources` in a module at the top level of your asset folder and then importing the assets with resources into your repository

Frank Lu · Answer

Ooooh let me try that