Question

嗨，我在编写代码时遇到错字，但我不知道为什么会这样。如果有人可以帮助，将不胜感激！

latest = ["time", 7]

current_Stock = [["time", "8"], [{"N/A": "N/A", "N/A": "N/A", 
                                  'historical_data': [['sec', 10], 
                                                      ["sec", 5], 
                                                      ["sec", 2], 
                                                      ["sec", 7], 
                                                      ["sec", 9], 
                                                      ["sec", 8]]}]]

i = 0

for x in currentStock[1]['historical_data']:
    if latest[1] == currentStock[1]['historical_data'][i][1]:
        associated_value = currentStock[1]['historical_data'][i][1]

        print(associated_value)

Answer 1

def iterate(lst, pkey= None):
    if isinstance(lst, dict):
        for key in lst:
          iterate(lst[key], key) # call

    elif isinstance(lst, (list, set)):
        for l in lst:
          iterate(l, pkey) # call
    else:
        print(lst) # do something

iterate(current_Stock)

Answer 2

首先，您将列表定义为current_Stock，并将其用作currentStock。
第二，您忘了遍历包含字典的列表。
第三，您忘记在i循环结束时更新for的值。试试这个，让我知道您是否遇到任何问题/错误。在这里：

latest = ["time", 7]
currentStock = [["time", "8"], [{"N/A": "N/A", "N/A": "N/A", 'historical_data': [['sec', 10], ["sec", 5], ["sec", 2], ["sec", 7], ["sec", 9], ["sec", 8]]}]]
i = 0
for x in currentStock[1][0]['historical_data']:
    if latest[1] == currentStock[1][0]['historical_data'][i][1]:
        associated_value = currentStock[1][0]['historical_data'][i][1]
        print(associated_value)
    i+=1

如何在嵌套字典中的嵌套列表之间循环？

2 个答案: