functools.cached_property is considered a property

Closes #436

Author: AWhetter

autoapi/_astroid_utils.py

@@ -233,6 +233,9 @@ def _is_property_class(class_node):
         return (
             class_node.name == "property"
             and class_node.root().name == builtins.__name__
+        ) or (
+            class_node.name == "cached_property"
+            and class_node.root().name == "functools"
         )
 
     for inferred in decorator.infer():

docs/changes/436.feature

@@ -0,0 +1 @@
+functools.cached_property is considered a property

tests/python/pyexample/example/example.py

@@ -3,6 +3,7 @@
 
 This is a description
 """
+from functools import cached_property
 
 A_TUPLE = ("a", "b")
 """A tuple to be rendered as a tuple."""
@@ -44,6 +45,11 @@ def property_simple(self) -> int:
         """This property should parse okay."""
         return 42
 
+    @cached_property
+    def my_cached_property(self) -> int:
+        """This cached property should be a property."""
+        return 42
+
     def method_okay(self, foo=None, bar=None):
         """This method should parse okay"""
         return True

tests/python/test_pyintegration.py

@@ -95,6 +95,10 @@ def check_integration(self, parse, example_path):
             == "This property should parse okay."
         )
 
+        my_cached_property = foo.find(id="example.Foo.my_cached_property")
+        assert my_cached_property
+        assert my_cached_property.find(class_="pre").text.strip() == "property"
+
         # Overridden methods without their own docstring
         # should inherit the parent's docstring
         bar_method_okay = example_file.find(id="example.Bar.method_okay")