发布时间:2019-06-22 23:47:03编辑:auto阅读(1626)
import random List = ['a','b','c','d'] First = raw_input("First :") for Item in List: if First == Item: List.remove(First) Second=random.sample(List,1) for Second in Second: List.remove(Second) Third=random.sample(List,1) for Third in Third: List.remove(Third) Fourth=random.sample(x,1) for Fourth in Fourth: List.remove(Fourth) print First + '|' + Second + '|' + Third + '|' + Fourth
代码解析
定义列表List
First为人为输入的第一个项
系统判断如果First属于列表List,则将First的值从列表List中去除
之后从列表List(已经去除First)中随机取一个值为Second,并从列表List中去除Second的值
再从列表List(已经去除First,Second)中随机取一个值为Third,并从列表List中去除Third的值
最后从列表List(已经去除First,Second和Third)中取值为Fourth
最后按照要求输出
每一个从列表中去除值前面的for循环的作用是:由于直接通过random取出的值依旧是列表形式,所以需要用for循环的方式把random的取值从列表转换成字符串。
把上面的例子改成函数模式:
import random numName="" def rmKey(listName,numName): for numName in numName: listName.remove(numName) return numName def listRandom(listName): keyName="" keyName=random.sample(listName,1) return keyName First="" Second="" Third="" Fourth="" List = ['a','b','c','d'] First = raw_input("First :") for Item in List: if First == Item: rmKey(List,First) Second=listRandom(List) Second=rmKey(List,Second) Third=listRandom(List) Third=rmKey(List,Third) Fourth=listRandom(List) Fourth=rmKey(List,Fourth) print First + '|' + Second + '|' + Third + '|' + Fourth
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