Definition of custom class and different methods

I have below definition:

def fun1(x) :
    return x + 2

class my_class :
    def fun1(x) :
        return x + 22
    def fun2(x) :
        return fun1(x) + 33

print(my_class.fun2(10))

However this returns 45, whereas I am expecting 65 (10 + 22 + 33).

Where am I making a mistake?

>Solution :

This can be a way out but, not a recommended style:

class my_class:
    def fun1(x) :
        return x + 22
    def fun2(x) :
        return my_class.fun1(x) + 33
my_class.fun2(10)

Another unorthodox way:

class my_class:
    def fun1(x) :
        return x + 22
    @classmethod
    def fun2(cls,x) :
        return cls.fun1(x) + 33
my_class.fun2(10)

The best way I can think of:

def fun1(x) :
    return x + 2

class my_class :
    def fun1(self,x) : 
        return x + 22
    def fun2(self,x) :
        return self.fun1(x) + 33 #refering to instance method self.fun1

print(my_class().fun2(10)) # my_class() is a object