extract_py: Import Dict if needed

jepler · jepler · commit 755caddc890c · 2021-07-20T19:49:25.000-05:00
diff --git a/tools/extract_pyi.py b/tools/extract_pyi.py
@@ -39,6 +39,7 @@
 IMPORTS_TYPING = frozenset(
     {
         "Any",
+        "Dict",
         "Optional",
         "Union",
         "Tuple",
