1 files changed, 18 insertions, 1 deletions
diff --git a/sphinx/ext/autodoc.py b/sphinx/ext/autodoc.py
index cb01cfcee..5938f30f1 100644
--- a/sphinx/ext/autodoc.py
+++ b/sphinx/ext/autodoc.py
@@ -971,6 +971,23 @@ class DocstringSignatureMixin(object):
                 self.args, self.retann = result
         return Documenter.format_signature(self)
 
+class DocstringStripSignatureMixin(DocstringSignatureMixin):
+    """
+    Mixin for AttributeDocumenter to provide the
+    feature of stripping any function signature from the docstring.
+    """
+    def format_signature(self):
+        if self.args is None and self.env.config.autodoc_docstring_signature:
+            # only act if a signature is not explicitly given already, and if
+            # the feature is enabled
+            result = self._find_signature()
+            if result is not None:
+                # Discarding _args is a only difference with
+                # DocstringSignatureMixin.format_signature.
+                # Documenter.format_signature use self.args value to format.
+                _args, self.retann = result
+        return Documenter.format_signature(self)
+    
 
 class FunctionDocumenter(DocstringSignatureMixin, ModuleLevelDocumenter):
     """
@@ -1247,7 +1264,7 @@ class MethodDocumenter(DocstringSignatureMixin, ClassLevelDocumenter):
         pass
 
 
-class AttributeDocumenter(ClassLevelDocumenter):
+class AttributeDocumenter(DocstringStripSignatureMixin,ClassLevelDocumenter):
     """
     Specialized Documenter subclass for attributes.
     """