Fix: for-loop index is only defined if iterable is not empty

python · Sep 9, 2024 · 55bfee2 · 55bfee2
1 parent 65935c6
commit 55bfee2
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mypy/partially_defined.py b/mypy/partially_defined.py
@@ -457,9 +457,9 @@ def visit_dictionary_comprehension(self, o: DictionaryComprehension) -> None:
 
     def visit_for_stmt(self, o: ForStmt) -> None:
         o.expr.accept(self)
+        self.tracker.start_branch_statement()
         self.process_lvalue(o.index)
         o.index.accept(self)
-        self.tracker.start_branch_statement()
         loop = Loop()
         self.loops.append(loop)
         o.body.accept(self)