asfsf

bugbear.py

@@ -8,7 +8,7 @@
 import re
 import sys
 import warnings
-from collections import namedtuple
+from collections import defaultdict, namedtuple
 from contextlib import suppress
 from functools import lru_cache, partial
 from keyword import iskeyword
@@ -1620,17 +1620,18 @@ class B909Checker(ast.NodeVisitor):
 
     def __init__(self, name: str):
         self.name = name
-        self.mutations = []
+        self.mutations = defaultdict(list)
+        self._conditional_block = 0
 
     def visit_Assign(self, node: ast.Assign):
         for target in node.targets:
             if isinstance(target, ast.Subscript) and _to_name_str(target.value):
-                self.mutations.append(node)
+                self.mutations[self._conditional_block].append(node)
         self.generic_visit(node)
 
     def visit_AugAssign(self, node: ast.AugAssign):
         if _to_name_str(node.target) == self.name:
-            self.mutations.append(node)
+            self.mutations[self._conditional_block].append(node)
         self.generic_visit(node)
 
     def visit_Delete(self, node: ast.Delete):
@@ -1644,7 +1645,7 @@ def visit_Delete(self, node: ast.Delete):
                 self.generic_visit(target)
 
             if name == self.name:
-                self.mutations.append(node)
+                self.mutations[self._conditional_block].append(node)
 
     def visit_Call(self, node: ast.Call):
         if isinstance(node.func, ast.Attribute):
@@ -1656,7 +1657,7 @@ def visit_Call(self, node: ast.Call):
                 function_object == self.name
                 and function_name in self.MUTATING_FUNCTIONS
             ):
-                self.mutations.append(node)
+                self.mutations[self._conditional_block].append(node)
 
         self.generic_visit(node)