[utils] Introduce bool_or_none

diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 2554a2abd7e86eeac1c92dddf6e90a307f8b9c9f..c42dd4c3ae20d59b6646b64180720c4482a0e901 100644 (file)
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -1815,6 +1815,10 @@ def float_or_none(v, scale=1, invscale=1, default=None):
         return default
 
 
+def bool_or_none(v, default=None):
+    return v if isinstance(v, bool) else default
+
+
 def strip_or_none(v):
     return None if v is None else v.strip()