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Title
# ask-ai
g

Giacomo Colombo

03/12/2024, 10:42 AM
I have this method to run an asset.
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def materialize_those_assets():
    materialize([AssetKey("your_asset_name")])
    print("Asset materialization completed.")
how to change it in order to pass a list of methods defined with asset decorator
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my_asset_list = [asset_1, asset_2, asset_3]
materialize_those_assets(my_asset_list)
how to retrieve the AssetKey properly and make the materialization works?
s

Scout

03/12/2024, 10:42 AM
To materialize a list of assets defined with the
@asset
decorator, you need to retrieve the
AssetKey
for each asset and pass them to the
materialize
function. The
AssetKey
is typically derived from the name of the asset function or can be explicitly defined using the
key_prefix
and
name
parameters in the
@asset
decorator. Here's how you can modify your
materialize_those_assets
function to accept a list of asset functions and materialize them:
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python from dagster import AssetKey, materialize  def materialize_those_assets(asset_list):     asset_keys = [AssetKey(asset.__name__) for asset in asset_list]     materialize(asset_keys)     print("Asset materialization completed.")  # Assuming asset_1, asset_2, and asset_3 are defined with the @asset decorator my_asset_list = [asset_1, asset_2, asset_3] materialize_those_assets(my_asset_list)
In this code snippet, we assume that the asset functions are named
asset_1
,
asset_2
, and
asset_3
, and we use the
__name__
attribute of the function to construct the
AssetKey
. If you have defined a custom asset key using the
key_prefix
argument in the
@asset
decorator, you would need to construct the
AssetKey
accordingly. For example, if
asset_1
is defined with a custom key prefix like this:
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python from dagster import asset  @asset(key_prefix=["my", "custom", "prefix"]) def asset_1():     # Asset computation logic     pass
You would need to construct the
AssetKey
using the same prefix:
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python AssetKey(["my", "custom", "prefix", "asset_1"])
Please adjust the
AssetKey
construction in the
materialize_those_assets
function based on how you have defined your asset keys. If you have used a different naming convention or key structure, you will need to modify the
AssetKey
creation accordingly.
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