为什么我的元组列表只有一个条目？

Question

我有一个元组列表，用作函数的参数。我希望该函数随机选择列表中的一个元组（我使用的是 random.randint，但出于测试目的将其注释掉）和 return。如果列表中的每个条目都是一个元组而不是一个条目，我该如何更改它？

announce_winner() 工作正常。我就是没加进去。

def get_winner(*nominees):
# Should accept as nominees a list of items
    winner = nominees[0]
#[random.randint(1, range(nominees))]
    return winner
# Randomly pick one of the nominees (list items) as the winner
# Return the winner (list item) to the caller

def main():
    best_original_score_list = [('Terence Blanchard','Da 5 Bloods'),
                                ('Trent Reznor and Atticus Ross','Mank'),
                                ('Emile Mosseri','Minari'),
                                ('James Newton Howard','News of the World'),
                                ('Trent Reznor, Atticus Ross, and Jon Batiste','Soul')]
    announce_nominees('Best Original Score',best_original_score_list)
    winner = get_winner(best_original_score_list)

main()

Answer 1

您已经很接近了，但如果我理解您要完成的目标，下面的代码可能会为您指明方向。具体来说，如果您想从 best_original_score_list 中随机选择一个元组，然后传入列表（无需使用 *nominees 对其进行“元组操作”），然后使用列表中的随机选择一个元组适当的随机函数。

示例：

from random import randrange

def get_winner(nominees):
    winner = nominees[randrange(0, len(nominees))]
    return winner

def main():
    best_original_score_list = [('Terence Blanchard','Da 5 Bloods'),
                                ('Trent Reznor and Atticus Ross','Mank'),
                                ('Emile Mosseri','Minari'),
                                ('James Newton Howard','News of the World'),
                                ('Trent Reznor, Atticus Ross, and Jon Batiste','Soul')]

    winner = get_winner(best_original_score_list)
    print(winner)

main()

输出：

('Trent Reznor and Atticus Ross', 'Mank')

Answer 2

我相信你真的在看 random.choice

def get_winner(nominees):
    return random.choice(nominees)

def main():
    best_original_score_list = [
        ('Terence Blanchard','Da 5 Bloods'),
        ('Trent Reznor and Atticus Ross','Mank'),
        ('Emile Mosseri','Minari'),
        ('James Newton Howard','News of the World'),
        ('Trent Reznor, Atticus Ross, and Jon Batiste','Soul'),
    ]
    announce_nominees('Best Original Score',best_original_score_list)
    winner = get_winner(best_original_score_list)

main()

为什么我的元组列表只有一个条目？

Why does my list of tuples only have one entry?

python

arguments

tuples

function