在 python 中写入、读取和排序列表列表

Question

我有 player_list。我想像这样保存在这样的文件中。

> John, 10
> Raymond, 20
> Oscar, 15

player_list = [['John', 10], ['Raymond', 20], ['Oscar', 15]]
# player_list.append(['Micheal',9])
# print(player_list)
with open('score_test.txt', 'w') as f:
    for item in player_list:
        f.write("{},{} \n".format(item[0], item[1]))

然后读取 'score_test.txt' 文件并像这样打印 [['John', 10], ['Raymond', 20], ['Oscar', 15]]

with open('score_test.txt', 'r') as file:
    words = file.read().splitlines()
print(words)

然后追加 ['Micheal',19] 变成 [['John', 10], ['Raymond', 20], ['Oscar', 15],[ 'Micheal',19]]

然后排序它的标记 [['Raymond', 20],['Micheal',19],['Oscar', 15],['John', 10]] 然后再次写入文件。谢谢

Answer 1


player_list = [['John', 10], ['Raymond', 20], ['Oscar', 15]]

with open('a.txt','w') as filee:
  for val in player_list:
    filee.write(f'{val[0]}, {val[1]}')
    filee.write('\n')

d = []

with open('a.txt', 'r') as file:
    words = file.read().splitlines()
    for word in words:
      temp = word.split(',')
      temp[1] = int(temp[1].strip())
      d.append(temp)

d.append(['Micheal',19])

player_list = sorted(d, key=lambda x:x[1], reverse=True)

with open('a.txt','w') as filee:
  for val in player_list:
    filee.write(f'{val[0]}, {val[1]}')
    filee.write('\n')

我想这可能对你有帮助。

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