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Pydantic · Class

BaseSettings

BaseSettings loads configuration from environment variables, dotenv files, or secret files and validates it with Pydantic. Constructor values and environment variables can override defaults.

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Syntax

class Settings(BaseSettings):
    model_config = SettingsConfigDict(env_prefix='APP_')
    database_url: str

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  • BaseModel
  • SettingsConfigDict
  • Field
  • AliasChoices
  • EnvSettingsSource
  • DotEnvSettingsSource
  • SecretsSettingsSource
  • CliSettingsSource

Source: Pydantic settings | Pydantic Docs. Checked 2026-11-03.