bpo-30466: Add brief explanation of classes to tutorial (GH-1804) (GH-2700)
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Classes
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*******
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Classes provide a means of bundling data and functionality together. Creating
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a new class creates a new *type* of object, allowing new *instances* of that
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type to be made. Each class instance can have attributes attached to it for
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maintaining its state. Class instances can also have methods (defined by its
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class) for modifying its state.
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Compared with other programming languages, Python's class mechanism adds classes
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with a minimum of new syntax and semantics. It is a mixture of the class
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mechanisms found in C++ and Modula-3. Python classes provide all the standard
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