class One: def __str__(self): return '1'class Two(One): def __init__(self): super().__init__()class Three(Two): def __init__(self): super().__init__()def main(): object1 = Two() object2 = One() object3 = Three() print(object1, object2, object3)
Question
class One: def str(self): return '1'class Two(One): def init(self): super().init()class Three(Two): def init(self): super().init()def main(): object1 = Two() object2 = One() object3 = Three() print(object1, object2, object3)
Solution
The code you've provided is written in Python. It defines three classes: One, Two, and Three. Two and Three are subclasses of One and Two respectively.
The __str__ method in class One returns the string '1'. This method is used to define how an instance of an object will be printed when it’s used in print() function. Since Two and Three are subclasses of One, they inherit this method.
The __init__ method in classes Two and Three is a special method in Python classes, it is the constructor method for a class. The super().__init__() call is used to call the __init__ method of the superclass (One for Two and Two for Three), but in this case, since One doesn't have an __init__ method, it's not doing anything.
The main function creates instances of Two, One, and Three, and then prints them.
When you run the main function, it will print '1 1 1' because the __str__ method of class One (which is inherited by Two and Three) returns '1'.
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