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→Reference
==Reference==
:* Time object code from '''Think Python''' by Allen B. Downey: [http://greenteapress.com/thinkpython2/html/thinkpython2017.html Chapter 16] and [http://greenteapress.com/thinkpython2/html/thinkpython2018.html Chapter 17]
:* Date object [https://docs.python.org/3/reference/datamodel.html#special-method-names special method name]