⬆ Require Pydantic > 1.0 (#1862)

* 🔥 Remove support for Pydantic < 1.0

* 🔥 Remove deprecated skip_defaults from jsonable_encoder and set default for exclude to None, as in Pydantic

* ♻️ Set default of response_model_exclude=None as in Pydantic

* ⬆️ Require Pydantic >=1.0.0 in requirements

fastapi/openapi/models.py

@@ -2,24 +2,13 @@ from enum import Enum
 from typing import Any, Callable, Dict, Iterable, List, Optional, Union
 
 from fastapi.logger import logger
-from pydantic import BaseModel
-
-try:
-    from pydantic import AnyUrl, Field
-except ImportError:  # pragma: nocover
-    # TODO: remove when removing support for Pydantic < 1.0.0
-    from pydantic import Schema as Field  # type: ignore
-    from pydantic import UrlStr as AnyUrl  # type: ignore
+from pydantic import AnyUrl, BaseModel, Field
 
 try:
     import email_validator
 
     assert email_validator  # make autoflake ignore the unused import
-    try:
-        from pydantic import EmailStr
-    except ImportError:  # pragma: nocover
-        # TODO: remove when removing support for Pydantic < 1.0.0
-        from pydantic.types import EmailStr  # type: ignore
+    from pydantic import EmailStr
 except ImportError:  # pragma: no cover
 
     class EmailStr(str):  # type: ignore

fastapi/openapi/utils.py

@@ -16,10 +16,10 @@ from fastapi.params import Body, Param
 from fastapi.utils import (
     deep_dict_update,
     generate_operation_id_for_path,
-    get_field_info,
     get_model_definitions,
 )
 from pydantic import BaseModel
+from pydantic.fields import ModelField
 from pydantic.schema import (
     field_schema,
     get_flat_models_from_fields,
@@ -30,12 +30,6 @@ from starlette.responses import JSONResponse
 from starlette.routing import BaseRoute
 from starlette.status import HTTP_422_UNPROCESSABLE_ENTITY
 
-try:
-    from pydantic.fields import ModelField
-except ImportError:  # pragma: nocover
-    # TODO: remove when removing support for Pydantic < 1.0.0
-    from pydantic.fields import Field as ModelField  # type: ignore
-
 validation_error_definition = {
     "title": "ValidationError",
     "type": "object",
@@ -91,7 +85,7 @@ def get_openapi_operation_parameters(
 ) -> List[Dict[str, Any]]:
     parameters = []
     for param in all_route_params:
-        field_info = get_field_info(param)
+        field_info = param.field_info
         field_info = cast(Param, field_info)
         # ignore mypy error until enum schemas are released
         parameter = {
@@ -122,7 +116,7 @@ def get_openapi_operation_request_body(
     body_schema, _, _ = field_schema(
         body_field, model_name_map=model_name_map, ref_prefix=REF_PREFIX  # type: ignore
     )
-    field_info = cast(Body, get_field_info(body_field))
+    field_info = cast(Body, body_field.field_info)
     request_media_type = field_info.media_type
     required = body_field.required
     request_body_oai: Dict[str, Any] = {}