From 597a0e102cce49a61b4bb01645f313bbbc86487e Mon Sep 17 00:00:00 2001
From: Hugo <hugovk@users.noreply.github.com>
Date: Thu, 2 May 2019 22:09:49 +0300
Subject: [PATCH 1/1] Fix B011 (#820)

Do not call assert False since python -O removes these calls. Instead callers should raise AssertionError().
---
 black.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/black.py b/black.py
index 0ea9b9a..234bfb5 100644
--- a/black.py
+++ b/black.py
@@ -3146,7 +3146,7 @@ def get_future_imports(node: Node) -> Set[str]:
             elif child.type == syms.import_as_names:
                 yield from get_imports_from_children(child.children)
             else:
-                assert False, "Invalid syntax parsing imports"
+                raise AssertionError("Invalid syntax parsing imports")
 
     for child in node.children:
         if child.type != syms.simple_stmt:
-- 
2.39.5