[dagster-yaml] single-file example

examples/yaml_single_file/asset1.py

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+print("hello")

examples/yaml_single_file/asset2.py

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+print("hello 2")

examples/yaml_single_file/definitions.py

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+from dagster import Definitions, PipesSubprocessClient
+from dagster_yaml import load_defs_from_yaml
+from dagster_yaml.multi_definition_set_config import MultiDefinitionSetConfig
+from dagster_yaml.shell.shell_asset_definition_config import ShellAssetDefinitionConfig
+
+defs = Definitions.merge(
+    load_defs_from_yaml(".", config_type=MultiDefinitionSetConfig[ShellAssetDefinitionConfig]),
+    Definitions(resources={"subprocess_client": PipesSubprocessClient()}),
+)

examples/yaml_single_file/my_assets.yaml

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+type: multi
+defs:
+- type: shell_asset
+  key: asset1
+  command: "python asset1.py"
+- type: shell_asset
+  key: asset2
+  command: "python asset2.py"
+  deps: ["asset1"]