正在将文件加载到 Python 中的列表中

Question

我遇到以下问题：我有 7 个列表表示星期几，我想为每个列表加载 .txt 文件中的值。

文件内容：

[50, 54, 29, 33, 22, 100, 45, 54, 89, 75]

[80, 98, 40, 43, 43, 80, 50, 60, 79, 30]

[10, 7, 80, 43, 48, 82, 33, 55, 83, 80]

[15, 20, 38, 10, 36, 50, 20, 26, 45, 20]

[20, 25, 47, 18, 56, 70, 30, 36, 65, 28]

[122, 140, 245, 128, 156, 163, 90, 140, 150, 128]

[100, 130, 234, 114, 138, 156, 107, 132, 134, 148]

我在下面包含了代码片段：

mon_sales = []
tue_sales = []
wed_sales = []
thu_sales = []
fri_sales = []
sat_sales = []
sun_sales = []

week_sales = [mon_sales, tue_sales, wed_sales, thu_sales,
              fri_sales, sat_sales, sun_sales]


def load_sales(file_path):
    """
    Loads the data in the sales list from a file.
    file_path specifies the path of the file to load
    Reports file exception if loading fails
    """

    print('Loading sales data from a file: ', file_path)

    print(week_sales)

    for day_sales in week_sales:
        day_sales.clear()

    print(week_sales)
    for day_sales in week_sales:
        try:
            with open('sales.txt', 'r') as input_file:
                for line in input_file:
                    stripped_line = line.strip() 
                    line_list = stripped_line.split('\n')
                    day_sales.append(line_list[0])
        except:
            print('omething went wrong while saving the data.')

    print(week_sales)

问题在于，程序不是从 .txt 文件中的一行来表示星期列表，而是将文件的内容复制为一周中每一天的附加列表。

我运行不知道如何改变这个，我只是在学习 python 需要你的帮助来弄明白。

如何编写一个程序，将文本文件中只有一行的值添加到每个包含星期几的列表中？

Answer 1

使用 json 库：

sales.txt

[50, 54, 29, 33, 22, 100, 45, 54, 89, 75]
[80, 98, 40, 43, 43, 80, 50, 60, 79, 30]
[10, 7, 80, 43, 48, 82, 33, 55, 83, 80]
[15, 20, 38, 10, 36, 50, 20, 26, 45, 20]
[20, 25, 47, 18, 56, 70, 30, 36, 65, 28]
[122, 140, 245, 128, 156, 163, 90, 140, 150, 128]
[100, 130, 234, 114, 138, 156, 107, 132, 134, 148]

代码

import json

with open('sales.txt') as input_file:
    result = [json.loads(s) for s in input_file]

[[50, 54, 29, 33, 22, 100, 45, 54, 89, 75], [80, 98, 40, 43, 43, 80, 50, 60, 79, 30], [10, 7, 80, 43, 48, 82, 33, 55, 83, 80], [15, 20, 38, 10, 36, 50, 20, 26, 45, 20], [20, 25, 47, 18, 56, 70, 30, 36, 65, 28], [122, 140, 245, 128, 156, 163, 90, 140, 150, 128], [100, 130, 234, 114, 138, 156, 107, 132, 134, 148]]

如果您的文件确实在每行数据之间有空行，请使用：

import json

with open('filename.csv') as input_file:
    def try_load(s):
        try:
            return json.loads(s)
        except json.decoder.JSONDecodeError:
            return None

    result = [s for s in map(try_load, input_file) if s]

正在将文件加载到 Python 中的列表中

Loading a file into a list in Python

python

file

load