From 9f1a1c36e60b14f9ff47d83234b4ea61c5f5e2f7 Mon Sep 17 00:00:00 2001
From: pukkandan <pukkandan.ytdlp@gmail.com>
Date: Sun, 24 Oct 2021 14:46:07 +0530
Subject: Separate `--check-all-formats` from `--check-formats`

Previously, `--check-formats` tested only the selected video formats, but ALL thumbnails
---
 yt_dlp/utils.py | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'yt_dlp/utils.py')

diff --git a/yt_dlp/utils.py b/yt_dlp/utils.py
index 08f9a5dc9..2c3ab00dc 100644
--- a/yt_dlp/utils.py
+++ b/yt_dlp/utils.py
@@ -4050,6 +4050,8 @@ class LazyList(collections.abc.Sequence):
 
     def __exhaust(self):
         self.__cache.extend(self.__iterable)
+        # Discard the emptied iterable to make it pickle-able
+        self.__iterable = []
         return self.__cache
 
     def exhaust(self):
-- 
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