Fix AssertionError when inferring a property consisting of a partial …

…function. (#2458)

Closes pylint-dev/pylint#9214

Thanks Martin Belanger for the report and
Bryce Guinta for the test case.

ChangeLog

@@ -16,6 +16,10 @@ What's New in astroid 3.2.3?
 ============================
 Release date: TBA
 
+* Fix ``AssertionError`` when inferring a property consisting of a partial function.
+
+Closes pylint-dev/pylint#9214
+
 
 What's New in astroid 3.2.2?
 ============================

astroid/nodes/scoped_nodes/scoped_nodes.py

@@ -2518,6 +2518,10 @@ def igetattr(
                 elif isinstance(inferred, objects.Property):
                     function = inferred.function
                     if not class_context:
+                        if not context.callcontext:
+                            context.callcontext = CallContext(
+                                args=function.args.arguments, callee=function
+                            )
                         # Through an instance so we can solve the property
                         yield from function.infer_call_result(
                             caller=self, context=context

tests/test_regrtest.py

@@ -477,3 +477,22 @@ def test_recursion_during_inference(mocked) -> None:
     with pytest.raises(InferenceError) as error:
         next(node.infer())
     assert error.value.message.startswith("RecursionError raised")
+
+
+def test_regression_missing_callcontext() -> None:
+    node: nodes.Attribute = _extract_single_node(
+        textwrap.dedent(
+            """
+        import functools
+
+        class MockClass:
+            def _get_option(self, option):
+                return "mystr"
+
+            enabled = property(functools.partial(_get_option, option='myopt'))
+
+        MockClass().enabled
+        """
+        )
+    )
+    assert node.inferred()[0].value == "mystr"