你这个算法就不对,输入的是RMB应该换成USD,应该是除以6.78,你写的乘以,人民币比美元还值钱了
money = input("请输入:")if money[:3] in ['USD']:D = 6.78 * eval(money[3:])print("人民币{:.2f}".format(D))elif money[:3] in ['RMB']:R = eval(money[3:])/6.78print("美元{:.2f}".format(R))else:print()