19 lines
635 B
Python
19 lines
635 B
Python
from typing import Optional
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try:
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from pydantic.main import ModelMetaclass
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except:
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from pydantic.v1.main import ModelMetaclass
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class AllOptional(ModelMetaclass):
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def __new__(cls, name, bases, namespaces, **kwargs):
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annotations = namespaces.get('__annotations__', {})
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for base in bases:
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annotations.update(base.__annotations__)
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for field in annotations:
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if not field.startswith('__'):
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annotations[field] = Optional[annotations[field]]
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namespaces['__annotations__'] = annotations
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return super().__new__(cls, name, bases, namespaces, **kwargs)
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