120 lines
3.2 KiB
Python
120 lines
3.2 KiB
Python
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"""Compatibility layer to make this package usable with Pydantic 1 or 2"""
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from typing import TYPE_CHECKING, Dict, List, Optional, Tuple
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from pydantic.version import VERSION as PYDANTIC_VERSION
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__all__ = [
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"PYDANTIC_V2",
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"ConfigDict",
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"JsonSchemaMode",
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"models_json_schema",
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"RootModel",
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"Extra",
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"v1_schema",
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"DEFS_KEY",
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"min_length_arg",
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]
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PYDANTIC_MAJOR_VERSION = int(PYDANTIC_VERSION.split(".", 1)[0])
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PYDANTIC_MINOR_VERSION = int(PYDANTIC_VERSION.split(".")[1])
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PYDANTIC_V2 = PYDANTIC_MAJOR_VERSION >= 2
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if TYPE_CHECKING:
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# Provide stubs for either version of Pydantic
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from enum import Enum
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from typing import Any, Literal, Type, TypedDict
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from pydantic import BaseModel
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from pydantic import ConfigDict as PydanticConfigDict
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def ConfigDict(
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extra: Literal["allow", "ignore", "forbid"] = "allow",
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json_schema_extra: Optional[Dict[str, Any]] = None,
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populate_by_name: bool = True,
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) -> PydanticConfigDict:
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"""Stub for pydantic.ConfigDict in Pydantic 2"""
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...
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class Extra(Enum):
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"""Stub for pydantic.Extra in Pydantic 1"""
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allow = "allow"
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ignore = "ignore"
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forbid = "forbid"
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class RootModel(BaseModel):
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"""Stub for pydantic.RootModel in Pydantic 2"""
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JsonSchemaMode = Literal["validation", "serialization"]
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def models_json_schema(
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models: List[Tuple[Type[BaseModel], JsonSchemaMode]],
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*,
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by_alias: bool = True,
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ref_template: str = "#/$defs/{model}",
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schema_generator: Optional[type] = None,
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) -> Tuple[Dict, Dict[str, Any]]:
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"""Stub for pydantic.json_schema.models_json_schema in Pydantic 2"""
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...
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def v1_schema(
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models: List[Type[BaseModel]],
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*,
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by_alias: bool = True,
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ref_prefix: str = "#/$defs",
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) -> Dict[str, Any]:
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"""Stub for pydantic.schema.schema in Pydantic 1"""
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...
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DEFS_KEY = "$defs"
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class MinLengthArg(TypedDict):
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pass
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def min_length_arg(min_length: int) -> MinLengthArg:
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"""Generate a min_length or min_items parameter for Field(...)"""
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...
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elif PYDANTIC_V2:
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from typing import TypedDict
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from pydantic import ConfigDict, RootModel
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from pydantic.json_schema import JsonSchemaMode, models_json_schema
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# Pydantic 2 renders JSON schemas using the keyword "$defs"
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DEFS_KEY = "$defs"
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class MinLengthArg(TypedDict):
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min_length: int
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def min_length_arg(min_length: int) -> MinLengthArg:
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return {"min_length": min_length}
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# Create V1 stubs. These should not be used when PYDANTIC_V2 is true.
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Extra = None
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v1_schema = None
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else:
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from typing import TypedDict
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from pydantic import Extra
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from pydantic.schema import schema as v1_schema
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# Pydantic 1 renders JSON schemas using the keyword "definitions"
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DEFS_KEY = "definitions"
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class MinLengthArg(TypedDict):
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min_items: int
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def min_length_arg(min_length: int) -> MinLengthArg:
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return {"min_items": min_length}
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# Create V2 stubs. These should not be used when PYDANTIC_V2 is false.
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ConfigDict = None
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models_json_schema = None
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JsonSchemaMode = None
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RootModel = None
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