Python 医院取卡练习

import random

tripCode = input("行程码与核算(y/n):")
card = input("是否有卡(y/n):")
cardMoney = input("输入卡余额")
if cardMoney.isdigit():
    cardMoney = float(cardMoney)
    if tripCode == "y":
        if card == "y":
            if cardMoney >= 200:
                codeNumber = random.randint(10000,99999)
                print("取卡成功，卡号为",codeNumber)
            else:
                print("余额不足，请先充值")
        else:
            print("请先开卡")
    else:
        print("请先完成行程码和核算")
else:
    print("余额输入错误")