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-rw-r--r--youtube_dl/utils.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/youtube_dl/utils.py b/youtube_dl/utils.py
index 9db7b9d9d..0aa350e64 100644
--- a/youtube_dl/utils.py
+++ b/youtube_dl/utils.py
@@ -87,6 +87,7 @@ if sys.version_info < (3,0):
print(s.encode(preferredencoding(), 'xmlcharrefreplace'))
else:
def compat_print(s):
+ assert type(s) == type(u'')
print(s)
def htmlentity_transform(matchobj):