Python解析JSON嵌套数据
[英]Python parsing JSON nested data
问题描述
我正在尝试从setlist.fm api解析此JSON数据。 我正在尝试从每个清单中按顺序获取所有歌曲名称。 我环顾四周，但互联网上描述的所有方法均无效。
这是JSON数据
{'itemsPerPage': 20,
'page': 1,
'setlist': [{'artist': {'disambiguation': '',
'mbid': 'cc197bad-dc9c-440d-a5b5-d52ba2e14234',
'name': 'Coldplay',
'sortName': 'Coldplay',
'tmid': 806431,
'url': 'https://www.setlist.fm/setlists/coldplay-3d6bde3.html'},
'eventDate': '15-11-2017',
'id': '33e0845d',
'info': 'Last show of the A Head Full of Dreams Tour',
'lastUpdated': '2017-11-23T14:51:05.000+0000',
'sets': {'set': [{'song': [{'cover': {'disambiguation': '',
'mbid': '9dee40b2-25ad-404c-9c9a-139feffd4b57',
'name': 'Maria Callas',
'sortName': 'Callas, Maria',
'url': 'https://www.setlist.fm/setlists/maria-callas-33d6706d.html'},
'name': 'O mio babbino caro',
'tape': True},
{'info': 'extended intro with Charlie '
'Chaplin speech',
'name': 'A Head Full of Dreams'},
{'name': 'Yellow'},
{'name': 'Every Teardrop Is a '
'Waterfall'},
{'name': 'The Scientist'},
{'info': 'with "Oceans" excerpt in '
'intro',
'name': 'God Put a Smile Upon Your '
'Face'},
{'info': 'with Tiësto Remix outro',
'name': 'Paradise'}]},
{'name': 'B-Stage',
'song': [{'name': 'Always in My Head'},
{'name': 'Magic'},
{'info': 'single version',
'name': 'Everglow'}]},
{'name': 'A-Stage',
'song': [{'info': 'with "Army of One" excerpt '
'in intro',
'name': 'Clocks'},
{'info': 'partial',
'name': 'Midnight'},
{'name': 'Charlie Brown'},
{'name': 'Hymn for the Weekend'},
{'info': 'with "Midnight" excerpt in '
'intro',
'name': 'Fix You'},
{'name': 'Viva la Vida'},
{'name': 'Adventure of a Lifetime'},
{'cover': {'disambiguation': '',
'mbid': '3f8a5e5b-c24b-4068-9f1c-afad8829e06b',
'name': 'Soda Stereo',
'sortName': 'Soda Stereo',
'tmid': 1138263,
'url': 'https://www.setlist.fm/setlists/soda-stereo-7bd6d204.html'},
'name': 'De música ligera'}]},
{'name': 'C-Stage',
'song': [{'info': 'extended',
'name': 'Kaleidoscope',
'tape': True},
{'info': 'acoustic',
'name': 'In My Place'},
{'name': 'Amor Argentina'}]},
{'name': 'A-Stage',
'song': [{'cover': {'mbid': '2c82c087-8300-488e-b1e4-0b02b789eb18',
'name': 'The Chainsmokers '
'& Coldplay',
'sortName': 'Chainsmokers, '
'The & '
'Coldplay',
'url': 'https://www.setlist.fm/setlists/the-chainsmokers-and-coldplay-33ce5029.html'},
'name': 'Something Just Like This'},
{'name': 'A Sky Full of Stars'},
{'info': 'Extended Outro; followed by '
'‘Believe In Love’ Tour '
'Conclusion Video',
'name': 'Up&Up'}]}]},
'tour': {'name': 'A Head Full of Dreams'},
'url': 'https://www.setlist.fm/setlist/coldplay/2017/estadio-ciudad-de-la-plata-la-plata-argentina-33e0845d.html',
'venue': {'city': {'coords': {'lat': -34.9313889,
'long': -57.9488889},
'country': {'code': 'AR', 'name': 'Argentina'},
'id': '3432043',
'name': 'La Plata',
'state': 'Buenos Aires',
'stateCode': '01'},
'id': '3d62153',
'name': 'Estadio Ciudad de La Plata',
'url': 'https://www.setlist.fm/venue/estadio-ciudad-de-la-plata-la-plata-argentina-3d62153.html'},
'versionId': '7b4ce6d0'},
{'artist': {'disambiguation': '',
'mbid': 'cc197bad-dc9c-440d-a5b5-d52ba2e14234',
'name': 'Coldplay',
'sortName': 'Coldplay',
'tmid': 806431,
'url': 'https://www.setlist.fm/setlists/coldplay-3d6bde3.html'},
'eventDate': '14-11-2017',
'id': '63e08ec7',
'info': '"Paradise", "Something Just Like This" and "De música '
'ligera" were soundchecked',
'lastUpdated': '2017-11-15T02:40:25.000+0000',
'sets': {'set': [{'song': [{'cover': {'disambiguation': '',
'mbid': '9dee40b2-25ad-404c-9c9a-139feffd4b57',
'name': 'Maria Callas',
'sortName': 'Callas, Maria',
'url': 'https://www.setlist.fm/setlists/maria-callas-33d6706d.html'},
'name': 'O mio babbino caro',
'tape': True},
{'info': 'extended intro with Charlie '
'Chaplin speech',
'name': 'A Head Full of Dreams'},
{'name': 'Yellow'},
{'name': 'Every Teardrop Is a '
'Waterfall'},
{'name': 'The Scientist'},
{'info': 'with "Oceans" excerpt in '
'intro',
'name': 'Birds'},
{'info': 'with Tiësto Remix outro',
'name': 'Paradise'}]},
{'name': 'B-Stage',
'song': [{'name': 'Always in My Head'},
{'name': 'Magic'},
{'info': 'single version; dedicated '
'to the Argentinian victims '
'of the New York terrorist '
'attack',
'name': 'Everglow'}]},
{'name': 'A-Stage',
'song': [{'info': 'with "Army of One" excerpt '
'in intro',
'name': 'Clocks'},
{'info': 'partial',
'name': 'Midnight'},
{'name': 'Charlie Brown'},
{'name': 'Hymn for the Weekend'},
{'info': 'with "Midnight" excerpt in '
'intro',
'name': 'Fix You'},
{'name': 'Viva la Vida'},
{'name': 'Adventure of a Lifetime'},
{'cover': {'disambiguation': '',
'mbid': '3f8a5e5b-c24b-4068-9f1c-afad8829e06b',
'name': 'Soda Stereo',
'sortName': 'Soda Stereo',
'tmid': 1138263,
'url': 'https://www.setlist.fm/setlists/soda-stereo-7bd6d204.html'},
'info': 'Coldplay debut',
'name': 'De música ligera'}]},
{'name': 'C-Stage',
'song': [{'info': 'Part 1: "The Guest House"',
'name': 'Kaleidoscope',
'tape': True},
{'info': 'acoustic; Will on lead '
'vocals',
'name': 'In My Place'},
{'info': 'song made for Argentina',
'name': 'Amor Argentina'},
{'info': 'Part 2: "Amazing Grace"',
'name': 'Kaleidoscope',
'tape': True}]},
{'name': 'A-Stage',
'song': [{'name': 'Life Is Beautiful'},
{'cover': {'mbid': '2c82c087-8300-488e-b1e4-0b02b789eb18',
'name': 'The Chainsmokers '
'& Coldplay',
'sortName': 'Chainsmokers, '
'The & '
'Coldplay',
'url': 'https://www.setlist.fm/setlists/the-chainsmokers-and-coldplay-33ce5029.html'},
'name': 'Something Just Like This'},
{'name': 'A Sky Full of Stars'},
{'name': 'Up&Up'}]}]},
这是我从URL中获取的JSON的一部分。 以下是我尝试使用的代码：
import requests
import json
from pprint import*
url = "https://api.setlist.fm/rest/1.0/artist/cc197bad-dc9c-440d-a5b5-d52ba2e14234/setlists?p=1"
headers = {'x-api-key': 'API-KEY',
'Accept': 'application/json'}
r = requests.get(url, headers=headers)
data = json.loads(r.text)
#pprint(r.json())
response = data['setlist']
#pprint(response)
for item in response:
pprint(item['sets']['set']['song']['name'])
但是，我收到此错误，无法解决，也无法在线找到任何帮助：
pprint(item['sets']['set']['song']['name'])
TypeError: list indices must be integers or slices, not str
1 个解决方案
解决方案1
0 已采纳 2017-12-24 12:00:53
- 通过键可以访问字典（Dict）。
- 列表通过索引访问。
即
# Dict get 'item'.
data = {'key': 'item'}
data['key']
# List get 'item0'.
data = ['item0', 'item1']
data[0]
# Dict with List get 'item0'.
data = {'key': ['item0', 'item1']}
data['key'][0]
两种存储类型都可以嵌套在JSON中，并且每种存储类型都需要以不同的方式进行访问。
您具有需要通过其建立索引的嵌套列表，并且可以通过for循环来完成。
除了您显示的Python不完整对象外，我无权访问可行的json数据，因此我尚未测试代码。 因此，不能保证这是正确的。 如果没有，它可能会演示如何执行任务。
import requests
import json
from pprint import *
url = "https://api.setlist.fm/rest/1.0/artist/cc197bad-dc9c-440d-a5b5-d52ba2e14234/setlists?p=1"
headers = {'x-api-key': 'API-KEY',
'Accept': 'application/json'}
r = requests.get(url, headers=headers)
data = json.loads(r.text)
result = []
for setlist_item in data['setlist']:
for set_item in setlist_item['sets']['set']:
for song_item in set_item['song']:
result += [song_item['name']]
print(result)
每个for循环都在处理每个列表，以最终扩展带有每个歌曲名称的结果。
使用 Python 解析嵌套的 json 数据
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