1 files changed, 2 insertions, 1 deletions
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index 0a90257..9e291c2 100755
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -1423,7 +1423,8 @@ class TarFile(object):
             fileobj = bltn_open(name, self._mode)
             self._extfileobj = False
         else:
-            if name is None and hasattr(fileobj, "name"):
+            if (name is None and hasattr(fileobj, "name") and
+                isinstance(fileobj.name, (str, bytes))):
                 name = fileobj.name
             if hasattr(fileobj, "mode"):
                 self._mode = fileobj.mode