From 963137c123c6d5e191e937a19c71d7216146150a Mon Sep 17 00:00:00 2001
From: Jannis Leidel <jannis@leidel.info>
Date: Mon, 31 May 2021 22:06:25 +0200
Subject: [PATCH] Gracefully handle empty COLUMNS/LINES env vars on Linux.

---
 tqdm/utils.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tqdm/utils.py b/tqdm/utils.py
index aae87e45..64665990 100644
--- a/tqdm/utils.py
+++ b/tqdm/utils.py
@@ -285,7 +285,7 @@ def _screen_shape_linux(fp):  # pragma: no cover
         except Exception:
             try:
                 return [int(os.environ[i]) - 1 for i in ("COLUMNS", "LINES")]
-            except KeyError:
+            except (KeyError, ValueError):
                 return None, None