Example of assets that take deps from a set of other assets

asset_group1.py

#assets you want to put in the initial asset group
from dagster import (
    asset,
)

# Define your assets and group them
@asset
def asset1():
    pass

@asset
def asset2():
    pass

asset_group2.py

from dagster import (
    asset,
    load_assets_from_modules
)

# this should be the filename of the module with the assets you want to use
from . import asset_group1

@asset(deps=load_assets_from_modules([asset_group1]) )
def downstream_asset():
    pass

definitions.py

from dagster import (
    Definitions,
    load_assets_from_modules,
)

from . import asset_group1, asset_group2

asset_group1 = load_assets_from_modules([asset_group1], group_name="GROUP1")
asset_group2 = load_assets_from_modules([asset_group2], group_name="GROUP2")

defs = Definitions(
    assets=[*asset_group1, *asset_group2],
)