Identifying the classes' methods

Our next step is to identify the methods these classes must provide. To do so we look for method syntax, that is we look for the pattern object.method(). Note that the parentheses are important. With them we know we are looking at a method, without them it would be an object attribute.

The methods prefixed with the Deck object name d indicate that the Deck class must provide the methods

• shuffle,
• cards_left, and
• deal

Furthermore if we look closely we can see that deal has an optional parameter that defaults to 1 based on the difference between the usages d.deal() and d.deal(5).

Similarly the methods prefixed with the names of the Hand objects roxx and chris indicate that the Hand class must provide

• add,
• size, and
• is_flush

methods.