Python 如何修复此问题，x不在列表中

这是此子程序的代码

def elimination():
    global name
    global contestants
    global tempContestants
    global lipsync_songs
    global bottom_two
    bottom = tempContestants[0:len(tempContestants)-1]
    tempContestants.remove(bottom)
    bottom1 = tempContestants[0:len(tempContestants)-1]
    tempContestants.remove(bottom1)
    bottom_two = [bottom, bottom1]
    print(bottom_two[0], "and", bottom_two[1], "I'm sorry my dears but you are up for elimination")
    lipsync()
    eliminated = bottom_two[random.randint(0,len(bottom_two)-1)]
    bottom_two.remove(eliminated)
    safe = str(bottom_two)
    print("Ladies, I have made my decision")
    print(safe+", shantay you stay!")
    print(eliminated+", sashay away!")
    contestants.remove(eliminated)
    if eliminated == name:
        print("You have been eliminated!")
        quit()

下面是错误消息

    tempContestants.remove(bottom)
ValueError: list.remove(x): x not in list

---

这意味着什么？我如何修复它？

这会复制您的错误：

In [644]: [1,2,3].remove(4)                                                                    
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-644-181ce8c0fac7> in <module>
----> 1 [1,2,3].remove(4)

ValueError: list.remove(x): x not in list
In [645]: [1,2,3].remove(3) 

===

您可以迭代删除这些项：

In [694]: for i in bottom: x.remove(i)                                                         
In [695]: x                                                                                    
Out[695]: [4]

或者只选择要保留的切片：

In [696]: x = [1,2,3,4] 
In [698]: x[-1:]                                                                               
Out[698]: [4]

---

此代码将随机丢弃最后两名选手中的一名。我不知道这是否是你的意图，但我会把它当作稻草人扔掉

import random

def elimination():
    # get last two contestants
    candidates = tempContestants[-2:]
    if len(candidates) != 2:
        print("Sorry, not enough players")
        quit()
    print("{} and {}, I'm sorry my dears but you are up for elimination".format(
            *candidates))
    lipsync()

    # select and and remove the loser
    eliminated = random.choice(candidates)
    candidates.remove(eliminated)
    safe = candidates[0]
    tempContestants.remove(eliminated)

    # report the news
    print("""Ladies, I have made my decision.
{}, shantay you stay!
{}, sashay away!""".format(safe, eliminated))

    # decide fate of game
    if eliminated == name:
        print("You have been eliminated!")
        quit()

def lipsync(): pass
tempContestants = ["A", "B", "C", "D", "E", "F"]
name = "F"
elimination()

运行此操作，由于随机选择，您将获得两个可能的输出。一次运行结果是

E and F, I'm sorry my dears but you are up for elimination
Ladies, I have made my decision.
E, shantay you stay!
F, sashay away!
You have been eliminated!

---

什么是选手？你想让那一行做什么？@MichaelBianconi或只是

临时参赛者[：-1]

-假设OP想要一个新的名单，除了最后一个参赛者。你想

倒数第二个

成为最后一个参赛者吗？然后就是

bottom=tempCompetitors[-1]

。顺便说一句，您不需要所有这些

global

语句<代码>全局仅在分配值（等号左侧的变量）时有用。当您所做的只是引用一个变量时，python会在第一次编译函数时判断它是本地的还是全局的。@t我不确定我到底是不是最后一个参赛者。这没有帮助。我试图向您展示

tempCompetities.remove（bottom）

会产生此错误，因为

bottom

（它的价值是什么）不在

tempCompetities

中。您当然可以找出原因！或者您可以将此

remove

包装在

try/except

块中。好的，看起来您想删除除最后一个之外的所有内容-然后只需适当地对其进行切片。请参阅我的编辑。它说不能将序列乘以类型为内置函数或方法的无int的整数？？如何操作？t汉克，我明天试试，告诉你是否可以works@RyanLaker-我编辑以显示我的完整测试代码，它可以正常工作，没有错误。问题在于您没有显示的代码。

import random

def elimination():
    # get last two contestants
    candidates = tempContestants[-2:]
    if len(candidates) != 2:
        print("Sorry, not enough players")
        quit()
    print("{} and {}, I'm sorry my dears but you are up for elimination".format(
            *candidates))
    lipsync()

    # select and and remove the loser
    eliminated = random.choice(candidates)
    candidates.remove(eliminated)
    safe = candidates[0]
    tempContestants.remove(eliminated)

    # report the news
    print("""Ladies, I have made my decision.
{}, shantay you stay!
{}, sashay away!""".format(safe, eliminated))

    # decide fate of game
    if eliminated == name:
        print("You have been eliminated!")
        quit()

def lipsync(): pass
tempContestants = ["A", "B", "C", "D", "E", "F"]
name = "F"
elimination()

E and F, I'm sorry my dears but you are up for elimination
Ladies, I have made my decision.
E, shantay you stay!
F, sashay away!
You have been eliminated!