From 185903de12de8837bf0dc0008a16e5e56c66a019 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Batuhan=20Ta=C5=9Fkaya?=
 <47358913+isidentical@users.noreply.github.com>
Date: Sun, 1 Mar 2020 23:07:22 +0300
Subject: bpo-39520: Fix un-parsing of ext slices with no dimensions (GH-18304)

---
 Python/ast_unparse.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'Python/ast_unparse.c')

diff --git a/Python/ast_unparse.c b/Python/ast_unparse.c
index f376e86ddc..1a7cd236aa 100644
--- a/Python/ast_unparse.c
+++ b/Python/ast_unparse.c
@@ -746,6 +746,7 @@ append_ast_ext_slice(_PyUnicodeWriter *writer, slice_ty slice)
         APPEND_STR_IF(i > 0, ", ");
         APPEND(slice, (slice_ty)asdl_seq_GET(slice->v.ExtSlice.dims, i));
     }
+    APPEND_STR_IF(dims_count == 1, ",");
     return 0;
 }
 
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