to Andrew Gwozdziewycz: Real humor... Peter Otten: thanks your reminder, in my project, a will a superset of b. so symmetric_difference equals difference. thank you all again!
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to Andrew Gwozdziewycz: Real humor... Peter Otten: thanks your reminder, in my project, a will a superset of b. so symmetric_difference equals difference. thank you all again!
-- http://mail.python.org/mailman/listinfo/python-list