Fix F811 redefinition of unused '_ast_py3'

Pierre-Sassoulas · Pierre-Sassoulas · commit 0d7cab10d66f · 2021-05-01T22:00:19.000+02:00
diff --git a/astroid/_ast.py b/astroid/_ast.py
@@ -6,11 +6,10 @@
 
 import astroid
 
-_ast_py3 = None
 try:
     import typed_ast.ast3 as _ast_py3
 except ImportError:
-    pass
+    _ast_py3 = None
 
 
 PY38 = sys.version_info[:2] >= (3, 8)
