列表未改组 python

list not shuffling python

我这里的代码应该随机播放包含 "ace of hearts" "two of hearts" 和 "three of hearts" 的列表。

它可以很好地从文件中检索它们,但不会打乱它们的顺序,只是将列表打印两次。据我所知,列表可以包含单词 - 但我似乎弄错了。

import random
def cards_random_shuffle():
    with open('cards.txt') as f:
        cards = [words.strip().split(":") for words in f]
        f.close()
    random.shuffle(cards)
    print(cards)
    return cards

split函数returns一个列表,所以不需要for words in f

import random
def cards_random_shuffle():
        with open('cards.txt') as f:
            cards = []
            for line in f:
                cards += line.strip().split(":")
        random.shuffle(cards)
        print(cards)
        return cards

也不需要使用 with open(...) 语法的 f.close()

我认为问题是当您实际上只想获取文件的第一行时,您循环了文件 for words in f 中的行。

假设您的文件如下所示:

Ace of Hearts:Two of Hearts:Three of Hearts

那么你只需要使用第一行:

import random
def cards_random_shuffle():
    with open('cards.txt') as f:
        firstline = next(f)
        cards = firstline.strip().split(':')
        # an alternative would be to read in the whole file:
        # cards = f.read().strip().split(':')
    print(cards)    # original order
    random.shuffle(cards)
    print(cards)    # new order
    return cards