Fix __eq__ of _MyMutableMapping to use isinstance check (#3354)

* Update dependencies

* Sync shared files from typespec repo (2026-02-26 05:09:41)

* Add changelog

* Update dependencies (2026-02-26 05:10:42)

* Regenerate for typespec-python (2026-02-26 05:16:01)

* Update dependencies

* Sync shared files from typespec repo (2026-02-26 06:24:14)

* Update dependencies (2026-02-26 06:25:13)

* Regenerate for typespec-python (2026-02-26 06:30:32)

---------

Co-authored-by: AutoPrFromHttpClientPython <AutoPrFromHttpClientPython>

Author: msyyc

.chronus/changes/http-client-python_fix-eq-method-in-model-base-2026-2-26-0-0-0.md

@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/Azure/autorest.python/blob/main/README.md",
   "dependencies": {
-    "@typespec/http-client-python": "https://artprodcus3.artifacts.visualstudio.com/A0fb41ef4-5012-48a9-bf39-4ee3de03ee35/29ec6040-b234-4e31-b139-33dc4287b756/_apis/artifact/cGlwZWxpbmVhcnRpZmFjdDovL2F6dXJlLXNkay9wcm9qZWN0SWQvMjllYzYwNDAtYjIzNC00ZTMxLWIxMzktMzNkYzQyODdiNzU2L2J1aWxkSWQvNTkyOTMzMi9hcnRpZmFjdE5hbWUvYnVpbGRfYXJ0aWZhY3RzX3B5dGhvbg2/content?format=file&subPath=%2Fpackages%2Ftypespec-http-client-python-0.27.1.tgz",
+    "@typespec/http-client-python": "https://artprodcus3.artifacts.visualstudio.com/A0fb41ef4-5012-48a9-bf39-4ee3de03ee35/29ec6040-b234-4e31-b139-33dc4287b756/_apis/artifact/cGlwZWxpbmVhcnRpZmFjdDovL2F6dXJlLXNkay9wcm9qZWN0SWQvMjllYzYwNDAtYjIzNC00ZTMxLWIxMzktMzNkYzQyODdiNzU2L2J1aWxkSWQvNTkzMDI3NS9hcnRpZmFjdE5hbWUvYnVpbGRfYXJ0aWZhY3RzX3B5dGhvbg2/content?format=file&subPath=%2Fpackages%2Ftypespec-http-client-python-0.27.1.tgz",
     "@autorest/system-requirements": "~1.0.2",
     "fs-extra": "~11.2.0",
     "tsx": "^4.21.0"

packages/autorest.python/package.json

@@ -67,7 +67,7 @@
     "js-yaml": "~4.1.0",
     "semver": "~7.6.2",
     "tsx": "^4.21.0",
-    "@typespec/http-client-python": "https://artprodcus3.artifacts.visualstudio.com/A0fb41ef4-5012-48a9-bf39-4ee3de03ee35/29ec6040-b234-4e31-b139-33dc4287b756/_apis/artifact/cGlwZWxpbmVhcnRpZmFjdDovL2F6dXJlLXNkay9wcm9qZWN0SWQvMjllYzYwNDAtYjIzNC00ZTMxLWIxMzktMzNkYzQyODdiNzU2L2J1aWxkSWQvNTkyOTMzMi9hcnRpZmFjdE5hbWUvYnVpbGRfYXJ0aWZhY3RzX3B5dGhvbg2/content?format=file&subPath=%2Fpackages%2Ftypespec-http-client-python-0.27.1.tgz",
+    "@typespec/http-client-python": "https://artprodcus3.artifacts.visualstudio.com/A0fb41ef4-5012-48a9-bf39-4ee3de03ee35/29ec6040-b234-4e31-b139-33dc4287b756/_apis/artifact/cGlwZWxpbmVhcnRpZmFjdDovL2F6dXJlLXNkay9wcm9qZWN0SWQvMjllYzYwNDAtYjIzNC00ZTMxLWIxMzktMzNkYzQyODdiNzU2L2J1aWxkSWQvNTkzMDI3NS9hcnRpZmFjdE5hbWUvYnVpbGRfYXJ0aWZhY3RzX3B5dGhvbg2/content?format=file&subPath=%2Fpackages%2Ftypespec-http-client-python-0.27.1.tgz",
     "fs-extra": "~11.2.0"
   },
   "devDependencies": {

packages/typespec-python/package.json

@@ -515,6 +515,8 @@ def setdefault(self, key: str, default: typing.Any = _UNSET) -> typing.Any:
         return self._data.setdefault(key, default)
 
     def __eq__(self, other: typing.Any) -> bool:
+        if isinstance(other, _MyMutableMapping):
+            return self._data == other._data
         try:
             other_model = self.__class__(other)
         except Exception:

packages/typespec-python/test/azure/generated/authentication-api-key/authentication/apikey/_utils/model_base.py

@@ -515,6 +515,8 @@ def setdefault(self, key: str, default: typing.Any = _UNSET) -> typing.Any:
         return self._data.setdefault(key, default)
 
     def __eq__(self, other: typing.Any) -> bool:
+        if isinstance(other, _MyMutableMapping):
+            return self._data == other._data
         try:
             other_model = self.__class__(other)
         except Exception:

packages/typespec-python/test/azure/generated/authentication-http-custom/authentication/http/custom/_utils/model_base.py

@@ -515,6 +515,8 @@ def setdefault(self, key: str, default: typing.Any = _UNSET) -> typing.Any:
         return self._data.setdefault(key, default)
 
     def __eq__(self, other: typing.Any) -> bool:
+        if isinstance(other, _MyMutableMapping):
+            return self._data == other._data
         try:
             other_model = self.__class__(other)
         except Exception:

packages/typespec-python/test/azure/generated/authentication-noauth-union/authentication/noauth/union/_utils/model_base.py

@@ -515,6 +515,8 @@ def setdefault(self, key: str, default: typing.Any = _UNSET) -> typing.Any:
         return self._data.setdefault(key, default)
 
     def __eq__(self, other: typing.Any) -> bool:
+        if isinstance(other, _MyMutableMapping):
+            return self._data == other._data
         try:
             other_model = self.__class__(other)
         except Exception:

packages/typespec-python/test/azure/generated/authentication-oauth2/authentication/oauth2/_utils/model_base.py

@@ -515,6 +515,8 @@ def setdefault(self, key: str, default: typing.Any = _UNSET) -> typing.Any:
         return self._data.setdefault(key, default)
 
     def __eq__(self, other: typing.Any) -> bool:
+        if isinstance(other, _MyMutableMapping):
+            return self._data == other._data
         try:
             other_model = self.__class__(other)
         except Exception:

packages/typespec-python/test/azure/generated/authentication-union/authentication/union/_utils/model_base.py

@@ -515,6 +515,8 @@ def setdefault(self, key: str, default: typing.Any = _UNSET) -> typing.Any:
         return self._data.setdefault(key, default)
 
     def __eq__(self, other: typing.Any) -> bool:
+        if isinstance(other, _MyMutableMapping):
+            return self._data == other._data
         try:
             other_model = self.__class__(other)
         except Exception:

packages/typespec-python/test/azure/generated/azure-client-generator-core-access/specs/azure/clientgenerator/core/access/_utils/model_base.py

@@ -523,6 +523,8 @@ def setdefault(self, key: str, default: typing.Any = _UNSET) -> typing.Any:
         return self._data.setdefault(key, default)
 
     def __eq__(self, other: typing.Any) -> bool:
+        if isinstance(other, _MyMutableMapping):
+            return self._data == other._data
         try:
             other_model = self.__class__(other)
         except Exception: