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-rw-r--r--Lib/idlelib/undo.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/Lib/idlelib/undo.py b/Lib/idlelib/undo.py
index f1d03f4..f52446d 100644
--- a/Lib/idlelib/undo.py
+++ b/Lib/idlelib/undo.py
@@ -358,6 +358,7 @@ def _undo_delegator(parent): # htest #
dump = Button(top, text="Dump", command=lambda:d.dump_event(None))
dump.pack(side='left')
+
if __name__ == "__main__":
from unittest import main
main('idlelib.idle_test.test_undo', verbosity=2, exit=False)