Why Decorator
Assume we has a function called myfunc, we wanna to call the function in another function. So
In this way, every time you have to use “deco(myfunc)”.
That’s why we use the decorator.
“@deco” means “myfunc = deco(myfunc)”
Decorator with parameter
“addFunc(3, 8) = deco(True)( addFunc(3, 8))”, “myFunc() = deco(False)( myFunc ())”
Inner Decorator
In python, there are three inner decorator: staticmethod, classmethod, property.
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staticmethod: the difference with method in class is without self. And it can be used without the object.
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classmethod: the difference with method in class is the first parameter is clf, instead of self.
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property: to get the values in class.
