适配器模式

def solve():
    class OldPrinter:
        def print_old(____):
            return f'____'
    class PrinterAdapter:
        def __init__(____):
            self._old = old_printer
        def print_new(____):
            return self._old.print_old(____)
    adapter = PrinterAdapter(OldPrinter())
    print(adapter.print_new(____))