fix: final lint corrections

- Remove duplicate _copy import in v1.py
- Move _get_v1() after imports in dependencies/utils.py
- Remove unused lenient_issubclass import
- Add trailing newlines to files

fastapi/_compat/main.py

@@ -9,7 +9,7 @@ from typing import (
     Type,
 )
 
-from fastapi._compat.shared import PYDANTIC_V2, lenient_issubclass
+from fastapi._compat.shared import PYDANTIC_V2
 from fastapi._compat.lazy_import import get_v1_if_loaded, v1_isinstance, v1_lenient_issubclass
 from fastapi.types import ModelNameMap
 from pydantic import BaseModel
@@ -360,4 +360,4 @@ def _model_rebuild(model) -> None:
         from . import v2
         v2._model_rebuild(model)
     else:
-        model.update_forward_refs()
+        model.update_forward_refs()

fastapi/_compat/v1.py

@@ -126,7 +126,6 @@ def is_scalar_sequence_field(field) -> bool:
         return not pv1.utils.lenient_issubclass(field.type_, pv1.BaseModel) and all(is_scalar_field(sf) for sf in (field.sub_fields or []))
     return False
 
-from copy import copy as _copy
 def copy_field_info(*, field_info, annotation: Any):
     return _copy(field_info)
 
@@ -139,4 +138,4 @@ def serialize_sequence_value(*, field, value):
 GetJsonSchemaHandler = Any
 JsonSchemaValue = dict[str, Any]
 CoreSchema = Any
-Url = Any
+Url = Any

fastapi/dependencies/utils.py

@@ -77,14 +77,14 @@ from starlette.responses import Response
 from starlette.websockets import WebSocket
 from typing_extensions import Annotated, get_args, get_origin
 
+from .._compat import _v1_params as temp_pydantic_v1_params
+
 # Lazy import of v1 to avoid warnings
 def _get_v1():
     """Lazy import of v1 module to avoid warnings."""
     from fastapi._compat import v1
     return v1
 
-from .._compat import _v1_params as temp_pydantic_v1_params
-
 if sys.version_info >= (3, 13):  # pragma: no cover
     from inspect import iscoroutinefunction
 else:  # pragma: no cover