在Python中从文本文件创建数组[已关闭]

chy5wohz 于 2023-03-21 发布在 Python

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我是Python新手。我正在尝试打开一个文本文件，并将其转换为数组
文本文件如下所示（textile.txt）

1,2022-05-01,37.2,70,18,120,80,95
1,2022-11-01,37.0,72,17,122,80,94
1,2023-05-01,37.1,71,16,121,78,93
1,2023-11-01,37.3,73,18,119,82,96
1,2024-05-01,37.0,69,19,120,80,95
2,2022-06-01,37.6,75,20,130,85,96
2,2022-12-01,37.8,74,19,128,84,95
2,2023-06-01,37.5,72,18,126,83,94
2,2023-12-01,37.7,73,21,130,86,97
2,2024-06-01,37.5,71,20,127,82,94
3,2022-07-01,36.9,68,16,118,75,93
3,2023-01-01,37.0,69,17,119,76,94
3,2023-07-01,36.8,67,15,117,74,92
3,2024-01-01,37.1,70,17,120,77,95
3,2024-07-01,36.9,68,16,118,75,93

我需要一个像这样的数组。

my_output = []
{1: [['2022-06-01', 37.2, 72, 16, 120, 80, 97], ['2022-09-15', 37.5, 73, 18, 125, 82, 96]], 2: [['2022-06-10', 36.9, 69, 18, 123, 80, 96], ['2023-01-03', 37.1, 71, 19, 124, 81, 97]], 3: [['2022-08-05', 37.3, 74, 20, 126, 83, 95], ['2023-03-01', 37.4, 75, 18, 123, 79, 98]]}

数据类型有int，data，float，int，int，int，int
这就是我一直在尝试的

my_output = []
with open ("textile.txt") as f:
    for line in f:
            id = [item.strip() for item in line.split(',')]
            my_output = append(id)

print(my_output)

我得到的返回值是[]

python

来源：https://stackoverflow.com/questions/75796737/creating-an-array-in-python-from-a-text-file

3条答案

按热度按时间

oknrviil1#

res = dict()
with open("textile.txt") as f:
    for line in f:
        i, date, f, *rest = line.split(',')
        i = int(i)
        if i not in res:
            res.setdefault(i, list())
        # convert str to int
        rest = list(map(int, rest))
        res[i].append([date, float(f), *rest])
print(res)

赞(0）回复(0）举报 2023-03-21

kknvjkwl2#

您可以使用defaultdict来存储与每个id对应的所有值。

from collections import defaultdict
res = defaultdict(list)
with open("textile.txt") as f:
    for line in f:
        i, date, f, *rest = line.rstrip('\n').split(',')
        res[int(i)].append([date, float(f), *map(int, rest)])
print(res)

赞(0）回复(0）举报 2023-03-21

bvn4nwqk3#

使用“my_output.append（id）”代替“my_output = append（id）”，append是“list”的类函数，不能直接使用

赞(0）回复(0）举报 2023-03-21