I have a pydantic.BaseModel class where I'd like the variable node to have a default value based on an environment variable ENV_NODE_POOL. Although my default environment variable works when I don't pass this variable, it seems to fail when I try to pass it. Would appreciate any help! from pydantic import Field, BaseModel from pydantic_settings import SettingsConfigDict class WorkflowRun(BaseModel): id: str name: str node: str = Field(alias="env_node_pool") model_config = SettingsConfigDict( env_file=".env", env_file_encoding="utf-8", env_ignore_empty=True, ) WorkflowRun(**{ "id": "1", "name": "test", "node": "test", # this fails }) WorkflowRun(**{ "id": "1", "name": "test", "env_node_pool": "test", # this succeeds }) Error: ValidationError: 1 validation error for WorkflowRun env_node_pool Field required [type=missing, input_value={'id': '1', 'name': 'test', 'node': 'test'}, input_type=dict] For further information visit https://errors.pydantic.dev/2.9/v/missing Output is truncated. View as a scrollable element or open in a text editor. Adjust cell output settings... Using pydantic.AliasChoices means that the default environment variable is not used: from pydantic import Field, BaseModel, AliasChoices from pydantic_settings import SettingsConfigDict class WorkflowRun(BaseModel): id: str name: str node: str = Field(validation_alias=AliasChoices('node', 'ENV_NODE_POOL')) model_config = SettingsConfigDict( env_file=".env", env_file_encoding="utf-8", env_ignore_empty=True, populate_by_name=True, ) WorkflowRun(**{ "id": "1", "name": "test", }) returns this error pydantic_core._pydantic_core.ValidationError: 1 validation error for WorkflowRun node Field required [type=missing, input_value={'id': '1', 'name': 'test'}, input_type=dict] For further information visit https://errors.pydantic.dev/2.9/v/missing Continue reading...
