Tuple An immutable data value that contains related elements. Tuples are used to group together related data, such as a person‘s name, their age, and their gender.
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Heterogeneous（异构）?can be composed of elements of different types.
year_born = ("Paris Hilton", 1981)
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students = [
("John", ["CompSci", "Physics"]),
("Vusi", ["Maths", "CompSci", "Stats"]),
("Jess", ["CompSci", "Accounting", "Economics", "Management"]),
("Sarah", ["InfSys", "Accounting", "Economics", "CommLaw"]),
("Zuki", ["Sociology", "Economics", "Law", "Stats", "Music"])]
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Packing & Un-Packing
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Reference：<How to Think Like a Computer Scientist>
原文：http://www.cnblogs.com/permanence-practice/p/4852058.html