python 3.9 typing

.chronus/changes/39_typing-2025-7-6-15-34-22.md

@@ -0,0 +1,8 @@
+---
+changeKind: fix
+packages:
+  - "@autorest/python"
+  - "@azure-tools/typespec-python"
+---
+
+Bump generated code to take full advantage of `3.9` typing

packages/autorest.python/package.json

@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/Azure/autorest.python/blob/main/README.md",
   "dependencies": {
-    "@typespec/http-client-python": "~0.15.0",
+    "@typespec/http-client-python": "https://artprodcus3.artifacts.visualstudio.com/A0fb41ef4-5012-48a9-bf39-4ee3de03ee35/29ec6040-b234-4e31-b139-33dc4287b756/_apis/artifact/cGlwZWxpbmVhcnRpZmFjdDovL2F6dXJlLXNkay9wcm9qZWN0SWQvMjllYzYwNDAtYjIzNC00ZTMxLWIxMzktMzNkYzQyODdiNzU2L2J1aWxkSWQvNTE4ODEzMi9hcnRpZmFjdE5hbWUvYnVpbGRfYXJ0aWZhY3RzX3B5dGhvbg2/content?format=file&subPath=%2Fpackages%2Ftypespec-http-client-python-0.15.0.tgz",
     "@autorest/system-requirements": "~1.0.2",
     "fs-extra": "~11.2.0",
     "tsx": "~4.19.1"

packages/autorest.python/samples/specification/azure-mgmt-test/test/azure-mgmt-test/azure/mgmt/test/_utils/serialization.py

@@ -21,7 +21,6 @@
 import sys
 import codecs
 from typing import (
-    Dict,
     Any,
     cast,
     Optional,
@@ -31,7 +30,6 @@
     Mapping,
     Callable,
     MutableMapping,
-    List,
 )
 
 try:
@@ -229,12 +227,12 @@ class Model:
     serialization and deserialization.
     """
 
-    _subtype_map: Dict[str, Dict[str, Any]] = {}
-    _attribute_map: Dict[str, Dict[str, Any]] = {}
-    _validation: Dict[str, Dict[str, Any]] = {}
+    _subtype_map: dict[str, dict[str, Any]] = {}
+    _attribute_map: dict[str, dict[str, Any]] = {}
+    _validation: dict[str, dict[str, Any]] = {}
 
     def __init__(self, **kwargs: Any) -> None:
-        self.additional_properties: Optional[Dict[str, Any]] = {}
+        self.additional_properties: Optional[dict[str, Any]] = {}
         for k in kwargs:  # pylint: disable=consider-using-dict-items
             if k not in self._attribute_map:
                 _LOGGER.warning("%s is not a known attribute of class %s and will be ignored", k, self.__class__)
@@ -311,7 +309,7 @@ def serialize(self, keep_readonly: bool = False, **kwargs: Any) -> JSON:
     def as_dict(
         self,
         keep_readonly: bool = True,
-        key_transformer: Callable[[str, Dict[str, Any], Any], Any] = attribute_transformer,
+        key_transformer: Callable[[str, dict[str, Any], Any], Any] = attribute_transformer,
         **kwargs: Any
     ) -> JSON:
         """Return a dict that can be serialized using json.dump.
@@ -380,7 +378,7 @@ def deserialize(cls, data: Any, content_type: Optional[str] = None) -> Self:
     def from_dict(
         cls,
         data: Any,
-        key_extractors: Optional[Callable[[str, Dict[str, Any], Any], Any]] = None,
+        key_extractors: Optional[Callable[[str, dict[str, Any], Any], Any]] = None,
         content_type: Optional[str] = None,
     ) -> Self:
         """Parse a dict using given key extractor return a model.
@@ -414,7 +412,7 @@ def _flatten_subtype(cls, key, objects):
             return {}
         result = dict(cls._subtype_map[key])
         for valuetype in cls._subtype_map[key].values():
-            result.update(objects[valuetype]._flatten_subtype(key, objects))  # pylint: disable=protected-access
+            result |= objects[valuetype]._flatten_subtype(key, objects)  # pylint: disable=protected-access
         return result
 
     @classmethod
@@ -528,7 +526,7 @@ def __init__(self, classes: Optional[Mapping[str, type]] = None) -> None:
             "[]": self.serialize_iter,
             "{}": self.serialize_dict,
         }
-        self.dependencies: Dict[str, type] = dict(classes) if classes else {}
+        self.dependencies: dict[str, type] = dict(classes) if classes else {}
         self.key_transformer = full_restapi_key_transformer
         self.client_side_validation = True
 
@@ -579,7 +577,7 @@ def _serialize(  # pylint: disable=too-many-nested-blocks, too-many-branches, to
 
                 if attr_name == "additional_properties" and attr_desc["key"] == "":
                     if target_obj.additional_properties is not None:
-                        serialized.update(target_obj.additional_properties)
+                        serialized |= target_obj.additional_properties
                     continue
                 try:
 
@@ -1184,7 +1182,7 @@ def rest_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argumen
 
     while "." in key:
         # Need the cast, as for some reasons "split" is typed as list[str | Any]
-        dict_keys = cast(List[str], _FLATTEN.split(key))
+        dict_keys = cast(list[str], _FLATTEN.split(key))
         if len(dict_keys) == 1:
             key = _decode_attribute_map_key(dict_keys[0])
             break
@@ -1386,7 +1384,7 @@ def __init__(self, classes: Optional[Mapping[str, type]] = None) -> None:
             "duration": (isodate.Duration, datetime.timedelta),
             "iso-8601": (datetime.datetime),
         }
-        self.dependencies: Dict[str, type] = dict(classes) if classes else {}
+        self.dependencies: dict[str, type] = dict(classes) if classes else {}
         self.key_extractors = [rest_key_extractor, xml_key_extractor]
         # Additional properties only works if the "rest_key_extractor" is used to
         # extract the keys. Making it to work whatever the key extractor is too much