1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index 78bb10c8082..5fc6183ffcf 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -636,6 +636,10 @@ class _FileInFile(object):
     def flush(self):
         pass
 
+    @property
+    def mode(self):
+        return 'rb'
+
     def readable(self):
         return True