使用 Python 将 JSON 转换为 CSV 3

Question

我需要从 Meetup API 获取一些数据，将我获得的 JSON 转换为 CSV，所有这些都在 Python 3. 我从未使用过JSON 或 Python，所以我运行遇到了一些问题。获取数据不是问题，但我似乎无法将 JSON object 解析为正确的 CSV 文件。我的代码，匿名：

import json
import requests
import csv


def main():
    # initialize variables
    output_file = 'result_meetup.csv'
    api_key = "YOUR_MEETUP_API_KEY"
    params = {'key': api_key}
    url_path = 'http://api.meetup.com/pro/:URLNAME/groups'

    # get data from API, parse to JSON
    data = requests.get(url_path, params=params)
    data_parsed = data.json()
    length_data = len(data_parsed) - 1

    data_to_file = open(output_file, 'w')
    csv_writer = csv.writer(data_to_file)

    for i in range(0, length_data):
        meetup = data_parsed[i]
        csv_writer.writerow([meetup])
    data_to_file.close()


if __name__ == "__main__":
    main()

现在，如您所见，我将列表写入 CSV。这导致了一个非常丑陋的输出，看起来像这样（同样，大写的值是匿名的）：

{u'rsvps_per_event': 0.0, u'organizers': [{u'permission': u'organizer', u'name': u'NAME', u'member_id': ID}], u'repeat_rsvpers': 0, u'topics': [{u'lang': u'en_US', u'id': ID, u'urlkey': u'socialnetwork', u'name': u'Social Networking'}, {u'lang': u'en_US', u'id': ID, u'urlkey': u'education', u'name': u'Education'}, {u'lang': u'en_US', u'id': ID, u'urlkey': u'newtech', u'name': u'New Technology'}, {u'lang': u'en_US', u'id': ID, u'urlkey': u'business-referral-networking', u'name': u'Business Referral Networking'}], u'upcoming_events': 0, u'gender_female': 0.3499999940395355, u'pro_join_date': DATE, u'id': ID, u'category': [{u'shortname': u'career-business', u'sort_name': u'Career & Business', u'id': 2, u'name': u'Career & Business'}], u'city': u'CITY', u'member_count': 73, u'lon': LON, u'organizer_photo': {u'thumb_link': u'LINK.JPEG', u'base_url': u'URL', u'id': ID, u'type': u'member', u'photo_link': u'LINK.JPEG', u'highres_link': u'LINK.JPEG'}, u'average_age': 35.555599212646484, u'status': u'Active', u'description': u'DESCRIPTION' u'founded_date': DATE, lat': LAT, u'urlname': u'NAME', u'gender_male': 0.6000000238418579, u'name': u'NAME', u'country': u'Portugal', u'gender_unknown': 0.05000000074505806, u'past_events': 0, u'gender_other': 0.0, u'past_rsvps': 0}

所以基本上，整个 JSON object 在一个 CSV 字段中，带有奇怪的 'u'，在列表中等等。但是，如果我不把它写成列表，我只得到 JSON object 的字段，没有数据，所以它只是 'Organizers', 'Name' 等，没有真实姓名。正如我所说，我是一个 python 初学者，还没有找到任何库来帮助我，但我确信它们存在。非常感谢任何帮助，如果它与 Python3 兼容，那就太好了。

编辑：我希望它最后看起来像什么：我在回复中收到多个 Meetup 组，它们的结构都与上图相同。因此，值的描述应该只列出一次，作为 header，下面列出的值（新行和管道表示 csv sheet 的新字段）：

RSVPs_per_event | Organizer | ID 
5               | Tom       | 1
20              | Jack      | 2
35              | Anne      | 3

Answer 1

要将 json 数据转换为 csv，您需要提取键并将它们写入 header，然后处理值。这可能对您有帮助：

data_parsed = json.loads(Data)

header = data_parsed[0].keys()
csv_writer.writerow(header)

for i in range(0,length_data)
    meetup = data_parsed[i].values()
    csv_writer.writerow([meetup])

Answer 2

如果其他人有同样的问题，我解决了，不是很优雅，但我需要数据。 JSON 过于隐蔽和复杂，无法解析，所以现在我只是从数据中读取我需要的字段。

import json
import requests
import csv


def main():
    # initialize variables
    output_file = 'result_meetup.csv'
    api_key = "YOUR_API_KEY"
    params = {'key': api_key}
    url_path = 'http://api.meetup.com/pro/:URLNAME/groups'

    # get data from API, parse to JSON
    data = requests.get(url_path, params=params)
    data_parsed = data.json()
    length_data = len(data_parsed) - 1

    data_to_file = open(output_file, 'w', newline='')
    csv_writer = csv.writer(data_to_file, delimiter=";")
    csv_writer.writerow(["id","name","city","country","member count","average age","founded_date","past_rsvps","rsvps_per_event","repeat_rsvpers","gender_unknown","gender_female","gender_male","gender_other"])

    for i in range(0, length_data):
        meetup = data_parsed[i]
        id = meetup['id']
        name = meetup['name']
        city = meetup['city']
        country = meetup['country']
        member_count = meetup['member_count']
        average_age = meetup['average_age']
        founded_date = meetup['founded_date']
        past_rsvps = meetup['past_rsvps']
        rsvps_per_event = meetup['rsvps_per_event']
        repeat_rsvpers = meetup['repeat_rsvpers']
        gender_unknown = meetup['gender_unknown']
        gender_female = meetup['gender_female']
        gender_male = meetup['gender_male']
        gender_other = meetup['gender_other']
        csv_writer.writerow([id,name,city,country,member_count,average_age,founded_date,past_rsvps,rsvps_per_event,repeat_rsvpers,gender_unknown,gender_female,gender_male,gender_other])
    data_to_file.close()


if __name__ == "__main__":
    main()

使用 Python 将 JSON 转换为 CSV 3

Convert JSON to CSV with Python 3

python

json

python-3.x

csv

meetup