Question

我尝试使用python从CSV创建JSON。我遇到的这个问题是一种从数据中分离标题的方法。我目前的代码是：

import csv
import json

with open('input.csv') as f:
    columns = ("Column 1", "Column 2")
    reader = csv.DictReader(f, columns)
    rows = list(reader)
with open('output.json', 'w') as f:
    json.dump(rows, f, indent=4)

但是会返回

[
{
    "Column 2": null, 
    "Column 1": "Title"
}, 
{
    "Column 2": " data2", 
    "Column 1": "data1"
}, 
{
    "Column 2": " data4", 
    "Column 1": "data3"
}, 
{
    "Column 2": " data6", 
    "Column 1": "data5"
}

而不是

[
    "Title1": {
        {
            "Column 2": " data2", 
            "Column 1": "data1"
        }, 
        {
            "Column 2": " data4", 
            "Column 1": "data3"
        }, 
        {
            "Column 2": " data6", 
            "Column 1": "data5"
        }
    }
]

下面是CSV的参考示例：

Title
data1, data2
data3, data4
data5, data6
Title2
data1, data2
data3, data4
data5, data6

Answer 1

您需要将数据作为读取消息发送到其他结构。

类似的东西：

data={}
with open('/tmp/f.csv') as f:
    reader=csv.reader(f)
    for sl in (row for row in reader):
        if len(sl)==1:
            key=sl[0]
            data[key]=[]
        else:
            data[key].append({"Column {}".format(i):e for i, e in enumerate(sl,1)}) 

>>> json.dumps(data, f, indent=4)   
{
    "Title2": [
        {
            "Column 2": " data2", 
            "Column 1": "data1"
        }, 
        {
            "Column 2": " data4", 
            "Column 1": "data3"
        }, 
        {
            "Column 2": " data6", 
            "Column 1": "data5"
        }
    ], 
    "Title": [
        {
            "Column 2": " data2", 
            "Column 1": "data1"
        }, 
        {
            "Column 2": " data4", 
            "Column 1": "data3"
        }, 
        {
            "Column 2": " data6", 
            "Column 1": "data5"
        }
    ]
}

Answer 2

您需要自己构建嵌套数据结构，而不仅仅使用list。这是你可以做到的一种方式：

import csv
import json

with open('input.csv') as f:
    columns = ("Column 1", "Column 2")
    reader = csv.DictReader(f, columns)
    tree = {}
    for row in reader:
        if row["Column 2"] is None:
            current = []
            tree[row["Column 1"]] = current
        else:
            current.append(row)

当找到“标题”行（第二列为空的行）时，会向树中添加一个新列表。此列表中将添加更多行，直到出现另一个“标题”行，并启动新列表。

Answer 3

你可以这样做吗？

<?php
while ($rowG = oci_fetch_array($stid, OCI_RETURN_NULLS)) {
?>
    <tr>
        <td><?php echo $rowG[2]; ?></td>
        <td><?php echo $rowG[1]; ?></td>
        <td><?php echo $rowG[0]; ?></td>
        <td><?php echo $rowG[3]; ?></td>
        <td><?php echo '<a href="./consultation.php?Login='.$rowG[2].'"> Link </a>'; ?></td>
    </tr>
<?php
}
?>

返回：

titles = ['Title', 'Title2']
output = {}
for line in f:
    if line[0] in titles:
        title = line[0]
        output[title] = {}
        output[title]["Column 1"] = []
        output[title]["Column 2"] = []
    else:
        output[title]["Column 1"].append(line[0])
        output[title]["Column 2"].append(line[1])

Python使用标头将CSV转换为JSON

3 个答案: