from pydantic import BaseSettings, validator, Field
[docs]class ExampleSettings(BaseSettings):
"""Document your project settings very conveniently. Applies like wise
to pydantic models.
"""
field_without_default: str
"""Shows the *[Required]* marker in the signature."""
field_plain_with_validator: int = 100
"""Show standard field with type annotation."""
field_with_validator_and_alias: str = Field("FooBar",
alias="BarFoo",
env="BarFoo")
"""Shows corresponding validator with link/anchor."""
field_with_constraints_and_description: int = Field(
default=5,
ge=0,
le=100,
description="Shows constraints within doc string."
)
[docs] @validator("field_with_validator_and_alias", "field_plain_with_validator")
def check_max_length_ten(cls, v):
"""Show corresponding field with link/anchor.
"""
if len(v) >= 10:
raise ValueError("No more than 10 characters allowed")
return v
[docs] class Config:
env_prefix = "foo_"
allow_mutation = True