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-rwxr-xr-xyoutube_dl/YoutubeDL.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py
index 53f20ac2c..5d654f55f 100755
--- a/youtube_dl/YoutubeDL.py
+++ b/youtube_dl/YoutubeDL.py
@@ -1339,7 +1339,7 @@ class YoutubeDL(object):
format['format_id'] = compat_str(i)
else:
# Sanitize format_id from characters used in format selector expression
- format['format_id'] = re.sub('[\s,/+\[\]()]', '_', format['format_id'])
+ format['format_id'] = re.sub(r'[\s,/+\[\]()]', '_', format['format_id'])
format_id = format['format_id']
if format_id not in formats_dict:
formats_dict[format_id] = []