some dunders

f/proxy_module.py

@@ -4,7 +4,7 @@
 import inspect
 from string import Formatter
 from types import CodeType, FrameType
-from typing import Iterable, Optional, Union, Sized, Dict, Callable, Type, Any
+from typing import Set, Iterable, Optional, Union, Sized, Dict, Callable, Type, Any
 try:
     from typing import Protocol
 except ImportError:
@@ -43,6 +43,12 @@ def __call__(self, string: Union[LazyString, str], lazy: bool = True, safe: bool
             return result
         return result.data
 
+    def __str__(self) -> str:
+        return 'f'
+
+    def __repr__(self) -> str:
+        return 'f'
+
     def sum_of_nonlocals(self, first_frame: Optional[FrameType], base_qualname: Optional[str], closures: bool, safe: bool) -> Dict[str, Any]:
         if not closures or first_frame is None or base_qualname is None:
             return {}
@@ -152,8 +158,13 @@ def startswith(iterable: SizedAndIterable, second_iterable: SizedAndIterable) ->
 
         return True
 
-    def __str__(self) -> str:
-        return 'f'
+    def get_all_mentioned_names(self, string: str) -> Set[str]:
+        result = set()
 
-    def __repr__(self) -> str:
-        return 'f'
+        class Visiter(ast.NodeVisitor):
+            def visit_Name(_self, node: ast.AST) -> Optional[ast.AST]:
+                result.add(node.id)
+
+        Visiter().visit(ast.parse(string))
+
+        return result