print(“欢迎使用花名册系统v6.8”.center(50)) print(“1:添加新名字”) print(“2:删除一个名字”) print(“3:修改一个名字”) print(“4:查询一个名字，显示此人序号”) print(“5:输出班级名单”) print(“6:统计班级人数”) print(“7:退出系统”) print("="*60) NameList=[‘A’,‘B’,‘C’,‘D’,‘E’,‘F’,‘G’]
while True: num = int(input(“输入数字”)) if num1: name = input(“输入名字”) if name in NameList: print(“名字已经存在”) else : NameList.append(name) print(“添加成功”) elif num2: name = input(“输入名字”) if name in NameList: NameList.remove(name) print(“删除成功”) else: print(“名字不存在”) elif num3: name = input(“输入要修改的名字”) if name in NameList: name1= input(“输入修改成的名字”) NameList[NameList.index(name)]=name1 print(“修改成功”) else: print(“无法修改，名字不存在”) elif num4: name = input(“输入名字”) if name in NameList: print(NameList.index(name)) else: print(“名字不存在”) elif num5: print(NameList) elif num6: print(set(NameList)) elif num==7: print(“退出”) break; print(“已退出”)
