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from pydantic import BaseModel, Extra
class RequestBodyModel(BaseModel):
"""A custom version of Pydantic's BaseModel which
- ignores unknown fields and
- does not allow fields to be overwritten after construction,
but otherwise uses Pydantic's default behaviour.
Ignoring unknown fields is a useful default. It means that clients can provide
unstable field not known to the server without the request being refused outright.
Subclassing in this way is recommended by
https://pydantic-docs.helpmanual.io/usage/model_config/#change-behaviour-globally
"""
class Config:
# By default, ignore fields that we don't recognise.
extra = Extra.ignore
# By default, don't allow fields to be reassigned after parsing.
allow_mutation = False
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