class RawArray():
    def __init__(self):
        x = []
        self.x = x
        ...
    
    def insert(self,value):
        self.x.append(value)
        return self.x

    def insertAt(self,value, index):
        self.x.insert(index,value)
        return self.x

    def removeAt(self,index):
        self.x.pop(index)

    def print(self):
        print(self.x)

    def max(self):
        print(max(self.x))

numbers = RawArray()
numbers.insert(4)
numbers.insert(2)
numbers.insert(8)
numbers.insertAt(9,1)
numbers.max()
numbers.print()
numbers.removeAt(2)
numbers.print()