class Command:
    def __init__(self, name, *args):
        self.name = name
        self.args = args

    def execute(self):
        print(f"Executing command {self.name} with args {self.args}")

class ConcreteCommandA(Command):
    def execute(self):
        super().execute()
        print("Doing something specific for command A")

class ConcreteCommandB(Command):
    def execute(self):
        super().execute()
        print("Doing something specific for command B")

def main():
    command_a = ConcreteCommandA("command_a")
    command_b = ConcreteCommandB("command_b")

    command_list = [command_a, command_b]

    for command in command_list:
        command.execute()

if __name__ == "__main__":
    main()