Improve Results and Result classes

src/ansys/dpf/core/model.py

@@ -131,7 +131,7 @@ def metadata(self):
         return self._metadata
 
     @property
-    def results(self):
+    def results(self) -> Results:
         """Available results of the model.
 
         Organizes the results from DPF into accessible methods. All the available

src/ansys/dpf/core/results.py

@@ -27,9 +27,12 @@
 to easily access results in result files.
 """
 
+from __future__ import annotations
+
 import functools
 
 from ansys.dpf.core import Operator, errors
+from ansys.dpf.core.available_result import AvailableResult
 from ansys.dpf.core.custom_fields_container import (
     BodyFieldsContainer,
     ElShapeFieldsContainer,
@@ -121,24 +124,31 @@ def __init__(
             self._connect_operators(result_info)
         self._str = str(result_info)
 
-    def __result__(self, result_type, *args):
+    def __result__(self, result_type: AvailableResult, *args) -> Result:
         """
         Create and return a result of the specified type.
 
         Parameters
         ----------
-        result_type : any
+        result_type:
             The type of the result to generate.
-        *args : tuple
+        *args:
             Additional arguments required for creating the result.
 
         Returns
         -------
-        Result
+        Result:
             An instance of the `Result` class, providing access to the specified result.
         """
         return Result(self._connector, self._mesh_by_default, result_type, self._server)
 
+    def __getattr__(self, item):
+        """Inform the requested result is unavailable."""
+        raise AttributeError(
+            f"Result '{item}' is not available. "
+            f"Available results are:\n{list(self._op_map_rev.keys())}"
+        )
+
     def _connect_operators(self, result_info):
         """Dynamically add operators for results.
 
@@ -300,7 +310,7 @@ def __init__(self, connector, mesh_by_default, result_info, server):
             print(self._result_info.name)
             raise e
 
-    def __call__(self, time_scoping=None, mesh_scoping=None):
+    def __call__(self, time_scoping=None, mesh_scoping=None) -> Operator:
         """Provide for Result instances to be callable for operator retrieval."""
         op = self._operator
         if time_scoping:

tests/test_results.py

@@ -0,0 +1,34 @@
+# Copyright (C) 2020 - 2025 ANSYS, Inc. and/or its affiliates.
+# SPDX-License-Identifier: MIT
+#
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+import pytest
+
+import ansys.dpf.core as dpf
+
+
+def test_results_raise_unavailable_result(simple_rst):
+    model = dpf.Model(simple_rst)
+    results = model.results
+    _ = results.displacement
+    with pytest.raises(
+        AttributeError, match="Result 'test' is not available. Available results are:\n"
+    ):
+        _ = results.test