without-env
A without Context backed by environment variables: the simplest possible
context, a static one loaded at startup and never changed.
EnvContext.load(MySettings) reads the environment once, at the boundary, into a
validated pydantic-settings
model (parse, don't validate), then hands that immutable value to processors via
current(). Because it never changes, a reloading source (a watched file, a
ConfigMap mount) is a separate plugin; see
without-configmap for the context-updated-by-a-stream
case.
from pydantic_settings import BaseSettings
from without_env import EnvContext
class Settings(BaseSettings):
default_mode: str = "upper"
max_bytes: int = 1_048_576
config = EnvContext.load(Settings) # reads os.environ once, validates
config.current().default_mode # the parsed value, same every call
See the
without-env guide
(with the API reference)
for the full surface.
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