Fix(Python): Add custom exceptions for HTTP status codes 409 (Conflict) and 422 (Unprocessable Entity) OpenAPITools#20244 (OpenAPITools#20251)

* Update exceptions.mustache

* Fix(Python): Add custom exceptions for HTTP status codes 409 (Conflict) and 422 (Unprocessable Entity) OpenAPITools#20244

Author: OM-HASE

modules/openapi-generator/src/main/resources/python/exceptions.mustache

@@ -140,6 +140,13 @@ class ApiException(OpenApiException):
         if http_resp.status == 404:
             raise NotFoundException(http_resp=http_resp, body=body, data=data)
 
+        # Added new conditions for 409 and 422
+        if http_resp.status == 409:
+            raise ConflictException(http_resp=http_resp, body=body, data=data)
+
+        if http_resp.status == 422:
+            raise UnprocessableEntityException(http_resp=http_resp, body=body, data=data)
+
         if 500 <= http_resp.status <= 599:
             raise ServiceException(http_resp=http_resp, body=body, data=data)
         raise ApiException(http_resp=http_resp, body=body, data=data)
@@ -178,6 +185,16 @@ class ServiceException(ApiException):
     pass
 
 
+class ConflictException(ApiException):
+    """Exception for HTTP 409 Conflict."""
+    pass
+
+
+class UnprocessableEntityException(ApiException):
+    """Exception for HTTP 422 Unprocessable Entity."""
+    pass
+
+
 def render_path(path_to_item):
     """Returns a string representation of a path"""
     result = ""

samples/openapi3/client/petstore/python/petstore_api/exceptions.py

@@ -150,6 +150,14 @@ def from_response(
         if http_resp.status == 404:
             raise NotFoundException(http_resp=http_resp, body=body, data=data)
 
+        # Added new exception classes for 409 and 422
+        
+        if http_resp.status == 409:
+            raise ConflictException(http_resp=http_resp, body=body, data=data)
+
+        if http_resp.status == 422: 
+            raise UnprocessableEntityException(http_resp=http_resp, body=body, data=data)
+
         if 500 <= http_resp.status <= 599:
             raise ServiceException(http_resp=http_resp, body=body, data=data)
         raise ApiException(http_resp=http_resp, body=body, data=data)
@@ -183,6 +191,14 @@ class UnauthorizedException(ApiException):
 class ForbiddenException(ApiException):
     pass
 
+class ConflictException(ApiException):
+    """Exception raised for HTTP 409 Conflict errors."""
+    pass
+
+
+class UnprocessableEntityException(ApiException): 
+    """Exception raised for HTTP 422 Unprocessable Entity errors."""
+    pass
 
 class ServiceException(ApiException):
     pass