envmix 0.1.2

Pydantic v2 mixin to load settings from environment variables with robust casting

envmix

Typed environment loader for Pydantic v2 models.

Features

• Simple: from_env() fills fields from overrides > env vars > defaults
• Typed: ships py.typed; works nicely with type checkers
• Robust casting: JSON-first via TypeAdapter; CSV and k=v fallbacks

Install

pip install envmix

Quick start

from pydantic import BaseModel
from envmix import EnvMixModel

class DB(BaseModel):
    host: str
    port: int

class Settings(EnvMixModel):
    __env_prefix__ = "APP_"
    host: str = "127.0.0.1"
    port: int = 8080
    debug: bool = False

# export APP_PORT=5000 APP_DEBUG=true
s = Settings.from_env()
print(s.port)  # 5000
print(s.debug) # True

Custom env key per field

from pydantic import Field

class Settings(EnvMixModel):
    server_host: str = Field("0.0.0.0", json_schema_extra={"env": "SERVER_HOST"})

License MIT