human
I am working on the file "02-basics/09-OOP.ipynb".
The first task is:
4.2 Defining instance attributes
Instance attributes (methods and variables) are only accesible when the class has been instantiated. Of the instance methods, one of the most important is the constructor of the class. All instance methods must include a parameter which holds the data instantiated. By convention, this parameter is called self.
Can you write Python code for it?
 ... Write me a the Python code you requested?
assistant
#Here is the Python code you requested.

class A:
    def __init__(self):
        print('Constructor called')
        
    def setter(self, x=1):
        self.x = x
        
    def getter(self):
        return self.x
a = A()

a.setter(2)
print(a.getter())

hasattr(A, 'setter')