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-rw-r--r--Lib/fileinput.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/Lib/fileinput.py b/Lib/fileinput.py
index 2f895e9..2e26b5b 100644
--- a/Lib/fileinput.py
+++ b/Lib/fileinput.py
@@ -142,6 +142,7 @@ class FileInput:
self._filelineno = 0
self._file = None
self._isstdin = 0
+ self._backupfilename = None
def __del__(self):
self.close()