Python Imgur API JSON 输出到 CSV

Question

我对 Python 和一般编码还很陌生，但我不知何故想出了如何将 Imgur API 串在一起给我一个 JSON 输出文件。

我的最终目标是能够将文件与其他一些已收集的数据一起放入 Excel 中，因此我希望能够将 API 输出转换为 CSV。

到目前为止，我唯一的解决方案是获取 JSON 输出并将其放入在线转换器（我已经尝试过其他人在网上所说的，但我从来没有能够让它工作。）

这是 JSON 的示例输出（我很确定它没有任何嵌套部分）：

{"status": 200, "data": {"in_gallery": false, "deletehash": "pfSgnqtf9eh4r2B", "layout": "blog", "description": null, "title": null, "cover_height": 177, "views": 0, "privacy": "public", "cover": "P1tTbZw", "images_count": 2, "datetime": 1468959627, "account_url": "JosephL32", "favorite": false, "cover_width": 222, "link": "http://imgur.com/a/3I3H7", "is_ad": false, "section": null, "images": [{"datetime": 1468959628, "bandwidth": 0, "nsfw": null, "vote": null, "id": "P1tTbZw", "account_id": null, "in_gallery": false, "title": null, "section": null, "width": 222, "size": 48248, "type": "image/png", "is_ad": false, "deletehash": "mGqP4DFgDtBZG8Y", "description": null, "views": 0, "link": "http://i.imgur.com/P1tTbZw.png", "height": 177, "name": "Screen Shot 2016-07-19 at 4.20.05 PM", "favorite": false, "account_url": null, "animated": false}, {"datetime": 1468959630, "bandwidth": 0, "nsfw": null, "vote": null, "id": "5zGa1go", "account_id": null, "in_gallery": false, "title": null, "section": null, "width": 221, "size": 74481, "type": "image/png", "is_ad": false, "deletehash": "LnJxl5rltxsIFl2", "description": null, "views": 0, "link": "http://i.imgur.com/5zGa1go.png", "height": 152, "name": "Screen Shot 2016-07-19 at 4.19.59 PM", "favorite": false, "account_url": null, "animated": false}], "nsfw": null, "id": "3I3H7", "account_id": 37918982}, "success": true}

总而言之，我正在寻找 python 代码，我可以在获取 JSON 数据后将其保存为 CSV 文件。

Answer 1

这应该不会太难，因为 JSON 和 CSV 文件结构都可以在 Python 中使用字典相当容易地表示。但是，首先，我应该指出 JSON 数据实际上是嵌套的，如果我们将其格式化得很好，就可以看出这一点：

{
  "status": 200,
  "data":
  {
    "in_gallery": false,
    "deletehash": "pfSgnqtf9eh4r2B",
    "layout": "blog",
    "description": null,
    "title": null,
    "cover_height": 177,
    "views": 0,
    "privacy": "public",
    "cover": "P1tTbZw",
    "images_count": 2,
    "datetime": 1468959627,
    "account_url": "JosephL32",
    "favorite": false,
    "cover_width": 222,
    "link": "http://imgur.com/a/3I3H7",
    "is_ad": false,
    "section": null,
    "images":
    [
      {
        "datetime": 1468959628,
        "bandwidth": 0,
        "nsfw": null,
        "vote": null,
        "id": "P1tTbZw",
        "account_id": null,
        "in_gallery": false,
        "title": null,
        "section": null,
        "width": 222,
        "size": 48248,
        "type": "image/png",
        "is_ad": false,
        "deletehash": "mGqP4DFgDtBZG8Y",
        "description": null,
        "views": 0,
        "link": "http://i.imgur.com/P1tTbZw.png",
        "height": 177,
        "name": "Screen Shot 2016-07-19 at 4.20.05 PM",
        "favorite": false,
        "account_url": null,
        "animated": false
      },
      {
        "datetime": 1468959630,
        "bandwidth": 0,
        "nsfw": null,
        "vote": null,
        "id": "5zGa1go",
        "account_id": null,
        "in_gallery": false,
        "title": null,
        "section": null,
        "width": 221,
        "size": 74481,
        "type": "image/png",
        "is_ad": false,
        "deletehash": "LnJxl5rltxsIFl2",
        "description": null, "views": 0,
        "link": "http://i.imgur.com/5zGa1go.png",
        "height": 152,
        "name": "Screen Shot 2016-07-19 at 4.19.59 PM",
        "favorite": false,
        "account_url": null,
        "animated": false
      }
    ],
    "nsfw": null,
    "id": "3I3H7",
    "account_id": 37918982
  },
  "success": true
}

这个 JSON 的嵌套结构会使这个问题更加棘手，因为它包含两个图像字典，每个图像字典都具有相同的属性集。目前尚不清楚您希望如何格式化最终数据，但我将以输出 CSV 为目标，其中每一行对应相册中的每张图片。

我们需要做的第一件事是将 JSON 字符串转换为 Python 字典：

import json

json_dict = json.loads(raw_json)

现在我们可以访问 json_dict['data'] 中的所有重要数据和 json_dict['data']['images'] 中的相册中的图像列表（在 Python 中表示为字典）。

假设您要为每个图像输出具有 datetime、title、link 和 name 属性的 CSV，以及 datetime, title, link, and images_count attributes for the album that each image appears in. 我们将首先打开一个新的 CSV 文件，并在 headers 处写入一行列它的顶部，然后遍历图像并为每个图像写一行。

import csv

# Open new CSV file
with open("output.csv", "w") as csv_file:
    writer = csv.writer(csv_file)

    # Write CSV headers
    writer.writerow(["datetime", "title", "link", "name", "album_datetime",
                     "album_title", "album_link", "album_images_count"])

    # Write data to CSV for each image
    album_data = json_dict['data']
    images_data = json_dict['data']['images']
    for image in images_data:
        writer.writerow([image['datetime'],
                           image['title'],
                           image['link'],
                           image['name'],
                           album_data['title'],
                           album_data['datetime'],
                           album_data['link'],
                           album_data['images_count']])

Python Imgur API JSON 输出到 CSV

Python Imgur API JSON output to CSV

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