I have been trying to solve the problem using a method which does not work. Trying to find the issues I haven’t found anything.

def is_balanced_parentheses(string):
    is_balanced = True
    balanced = Stack()
    for i in string:
        if i == "(":
            balanced.push(i)
        if i == ")":
            balanced.push(i)
            
    if balanced.stack_list[0] == ")":
        is_balanced = False
    elif balanced.stack_list[0] == "(":
        is_balanced = True
        
    return is_balanced