从文件 python 中检索列表类型的多个词典

Question

我想在将列表传递到文件后检索该列表的字典。但是当我把它写在文本中时，我丢失了列表内容的格式。我怎样才能再次恢复以字典类型格式化的数据？

首先我创建了一个二维列表。然后我用空字典和有值的字典填值

dataValue = {
        'telefone': '6298855663311',
        'nome': '', 
        'pagamento': 'Boleto', 
        'embarque': '16:00'
}

emptyDi = {}

assentosMatriz2D = [

        [dataValue, emptyDi, emptyDi, emptyDi, emptyDi],
        
        [emptyDi, emptyDi, emptyDi, emptyDi, emptyDi],
        
    [emptyDi, emptyDi, dataValue, emptyDi, emptyDi]

    ]

print(assentosMatriz2D[0][1])

with open('listfile.txt', 'w') as f:
    f.writelines("%s\n" % place for place in assentosMatriz2D)

# define empty list
linhas = []

# open file and read the content in a list
with open('listfile.txt', 'r') as f:
    filecontents = f.readlines()

    for line in filecontents:
        # remove linebreak which is the last character of the string
        current_place = line[:-1]

        # add item to the list
        linhas.append(current_place)

create_lt = linhas[1]

print(create_lt[0][0])

print(f'the firt line {create_lt}')

output:::::
>>{}
>>[
>>the firt line [{}, {}, {}, {}, {}]

Answer 1

要检索作为字符串传递的字典，您可以使用 eval (current_place = eval(line[:-1])) 但因为它可以运行编码，所以非常不安全，如果您不这样做，请不要这样做不要相信消息来源。最常见的存储方式是 json

import json
with open('listfile.txt', 'w') as f:
    json.dump(assentosMatriz2D, f)

# open file and read the content in a list
with open('listfile.txt', 'r') as f:
    assentosMatriz2D = json.load(f)

从文件 python 中检索列表类型的多个词典

retrieving multiple dictionaries in list type from file python

formatting

dictionary

file

list

python-3.x