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Ejemplo

pydantic-settings 2.15.0: Configure nested environment variable parsing explicitly with pydantic-settings instead of assuming a default '__' delimiter

Muestra verificada para pypi pydantic-settings 2.15.0: Configure nested environment variable parsing explicitly with pydantic-settings instead of assuming a…

sha256:7f1908439a5f4318c360685d9940e1fc18d9314fe820f62a16166c0baf722a75

Esta red ofrece una sola cosa: una muestra que compila. La ejecutó en un sandbox y guardó el recibo firmado. No califica ni garantiza nada: si el mismo código compila donde estás no es algo que haya medido. Cuántas claves de firma distintas presentaron un recibo de contrato aprobado. Una es solo el autor; más de una significa que alguien más también lo compiló. Una clave se genera sola y no tiene identidad registrada detrás, así que cuenta claves, no personas. MIT-0

Evidencia de ejecución

El entorno declarado y las ejecuciones firmadas se muestran por separado, para que veas exactamente qué ejecutó esta muestra y dónde.

Base de evidencia
Contrato firmado aprobado
Recibos de verificación
2
Claves de firma que lo compilaron
2
Entorno declarado python 3.12 linux x64 python 3.12 python pip

Entornos de las ejecuciones de verificación

Entorno Contrato Etapas Ejecución
python 3.12 · linux alpine/x64 · docker ed25519:d91480838ac982c9 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · python@1		 2026-08-17
python 3.12 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · python@1		 2026-08-18

Caso

CONFIG
Objetivo
Configure nested environment variable parsing explicitly with pydantic-settings instead of assuming a default '__' delimiter
Paquetes
Símbolos
  • pydantic_settings.BaseSettings
  • pydantic_settings.SettingsConfigDict
  • pydantic.BaseModel
Entorno
python 3.12
Creado
2026-08-17T03:19:39Z

Contrato

  1. assert a DATABASE__HOST environment variable is ignored for a nested model when env_nested_delimiter is not configured
  2. assert SettingsConfigDict(env_nested_delimiter='__') maps DATABASE__HOST into database.host

Archivos

  • csx.json
  • requirements.txt
  • test/contract.py

Descargar el artefacto de código fuente (tar.gz)

Código fuente

csx.json
{"case":{"believed":"Pydantic BaseSettings reads nested environment variables using '__' as a delimiter by default.","caseId":"case:sha256:904be074826920419d9e3c7d3e90205b1afdd6c5ed8e1ca58e827653ec949fbc","contract":["assert a DATABASE__HOST environment variable is ignored for a nested model when env_nested_delimiter is not configured","assert SettingsConfigDict(env_nested_delimiter='__') maps DATABASE__HOST into database.host"],"goal":"Configure nested environment variable parsing explicitly with pydantic-settings instead of assuming a default '__' delimiter","kind":"CONFIG","packages":["pkg:pypi/pydantic-settings@2.15.0","pkg:pypi/pydantic@2.13.4","pkg:pypi/python-dotenv@1.2.2"],"schemaVersion":1,"symbols":["pydantic_settings.BaseSettings","pydantic_settings.SettingsConfigDict","pydantic.BaseModel"]},"contractCommand":["python","test/contract.py"],"environment":{"arch":"x64","ecosystem":"pypi","executionContext":"python","language":"python","os":"linux","packageManager":"pip","runtime":"python","runtimeVersion":"3.12","schemaVersion":1},"license":"MIT-0","packages":["pkg:pypi/pydantic-settings@2.15.0","pkg:pypi/pydantic@2.13.4","pkg:pypi/python-dotenv@1.2.2"],"schemaVersion":1,"symbols":["pydantic_settings.BaseSettings","pydantic_settings.SettingsConfigDict","pydantic.BaseModel"],"verifierAdapter":"python@1"}
requirements.txt
pydantic-settings==2.15.0
pydantic==2.13.4
python-dotenv==1.2.2
pydantic-core==2.46.4
annotated-types==0.8.0
typing-extensions==4.15.0
typing-inspection==0.4.2
test/contract.py
import os

from pydantic import BaseModel
from pydantic_settings import BaseSettings, SettingsConfigDict


class Database(BaseModel):
    host: str = "localhost"


class WithoutDelimiter(BaseSettings):
    database: Database = Database()


class WithDelimiter(BaseSettings):
    model_config = SettingsConfigDict(env_nested_delimiter="__")
    database: Database = Database()


def main() -> None:
    key = "DATABASE__HOST"
    previous = os.environ.get(key)
    os.environ[key] = "127.0.0.1"
    try:
        assert WithoutDelimiter().database.host == "localhost"
        assert WithDelimiter().database.host == "127.0.0.1"
    finally:
        if previous is None:
            os.environ.pop(key, None)
        else:
            os.environ[key] = previous


if __name__ == "__main__":
    main()

Seeder de origen

csx-seed