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首页 > 解决方案 > 将文本文件中的特定行作为字典中值列表的第 1 项，并将后续行作为 1 个字符串附加到同一列表的第 2 项

python-3.x - 将文本文件中的特定行作为字典中值列表的第 1 项，并将后续行作为 1 个字符串附加到同一列表的第 2 项

问题描述

我有一个要导入字典的文本文件，但我在试图让程序将正确的行号识别为字典列表中的第 1 项和第 2 项时遇到问题

文本文件的格式是这样的（每行之间没有空行，只有在每条记录的末尾，有一个换行符）：

ProductA

2020-08-03 16:26:21

This painting was done by XNB.

The artist seeks to portray the tragedies caused by event XYZ.

The painting weighs 2kg.

####blank line#####

ProductB

2020-08-03 16:26:21

This painting is done by ONN.

It was stolen during world war 2.

Decades later, it was discovered in the black market of country XYZ.

It was bought for 2 million dollars by ABC.


###blank line###

字典中的期望结果：

{ 'ProductA' : ['2020-08-03 16:26:21', 'This painting was done by XNB.The artist seeks to portray  the tragedies caused by event XYZ. The painting weighs 2kg.'], 'ProductB':['2020-08-03 16:26:21','This painting is done by ONN.This painting is done by ONN.Decades later, it was discovered in the black market of country XYZ.It was bought for 2 million dollars by ABC.']}

其中 item_2 是一个字符串，它从第 3 行开始组合到与空行相交的信息末尾。

问题：我不知道如何对逻辑进行编码，以便程序能够正确地将其分配到我想要的位置。

header = ""
header = True

for line in records:

        data = line.splitlines()

        if line!= '\n': # check for line break which indicate new record

            if Header: #

               #code which  will assign 1st line of each record as key to dictionary

            else:
               # This is where I need help. 
               # Code which  will assign 2nd line as item_1 and then assign 3rd lines onwards till the end of record as item_2 in a single string.
               # items_2 may have different number of lines being combined into 1 string for each record.
               # I try to form a rough idea how the logic might be in code below but I feel that something is missing and I got a bit confused.
            
                for line in list: # result in TypeError,  'type' object is not iterable.
                        dict[line[1]] = dict[header].append(line[1].strip("\n")) 
                        # Since the outer if has already done its job of identifying 1st line of record. The line of code seeks to assign the next line (line 2 in text file) which I think would be interpreted by the program as line[1] to item 2.

                        dict[line[2:]] = dict[header].append(line[2:].strip("\n"))
                         # Assign 3rd line of text file onwards as a single string which is item_2 in the list of value for dictionary.

          else: 

             #code which reset boolean for header

标签： python-3.x

解决方案

尝试这个：

with open('data.txt') as fp:
    data = fp.read().split('\n\n')
res = {}
for x in data:
    k, v = x.strip().split('\n', 1)
    v = v.split('\n')
    res[k] = [v[0], ' '.join(v[1:])]
print(res)

输出：

{'ProductA': ['2020-08-03 16:26:21', 'This painting was done by XNB. The artist seeks to portray the tragedies caused by event XYZ. The painting weighs 2kg.'], 'ProductB': ['2020-08-03 16:26:21', 'This painting is done by ONN. It was stolen during world war 2. Decades later, it was discovered in the black market of country XYZ. It was bought for 2 million dollars by ABC.']}

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