Remove JsonDict

pydantic/__init__.py

@@ -325,7 +325,6 @@
     'Tag': (__package__, '.types'),
     'CallableDiscriminator': (__package__, '.types'),
     'JsonValue': (__package__, '.types'),
-    'JsonDict': (__package__, '.types'),
     # type_adapter
     'TypeAdapter': (__package__, '.type_adapter'),
     # warnings

pydantic/types.py

@@ -30,7 +30,7 @@
 import annotated_types
 from annotated_types import BaseMetadata, MaxLen, MinLen
 from pydantic_core import CoreSchema, PydanticCustomError, core_schema
-from typing_extensions import Annotated, Literal, Protocol, TypeAlias, TypeAliasType, deprecated
+from typing_extensions import Annotated, Literal, Protocol, TypeAliasType, deprecated
 
 from ._internal import (
     _core_utils,
@@ -103,7 +103,6 @@
     'StringConstraints',
     'Tag',
     'CallableDiscriminator',
-    'JsonDict',
     'JsonValue',
 )
 
@@ -2665,8 +2664,30 @@ def _convert_schema(self, original_schema: core_schema.CoreSchema) -> core_schem
         )
 
 
+_JSON_TYPES = {int, float, str, bool, list, dict, type(None)}
+
+
 def _get_type_name(x: Any) -> str:
-    return getattr(type(x), '__name__', '<no name>')
+    type_ = type(x)
+    if type_ in _JSON_TYPES:
+        return type_.__name__
+
+    # Handle proper subclasses; note we don't need to handle None here
+    if isinstance(x, bool):
+        return 'bool'
+    if isinstance(x, int):
+        return 'int'
+    if isinstance(x, float):
+        return 'float'
+    if isinstance(x, str):
+        return 'str'
+    if isinstance(x, list):
+        return 'list'
+    if isinstance(x, dict):
+        return 'dict'
+
+    # Fail by returning the type's actual name
+    return getattr(type_, '__name__', '<no type name>')
 
 
 class _AllowAnyJson:
@@ -2692,4 +2713,3 @@ def __get_pydantic_core_schema__(cls, source_type: Any, handler: GetCoreSchemaHa
         _AllowAnyJson,
     ],
 )
-JsonDict: TypeAlias = Dict[str, JsonValue]