我有一个带
列的数据框数据列中的每个对象都是字典。我希望字典中的每个对象都是一个独立的列。任何帮助或方向的方式将不胜感激。
下面是数据框中一个对象的样子。
pd.Series(data.data[1])
backers_count 37
blurb Nano Art will make and market customized piece...
category {'id': 21, 'name': 'Digital Art', 'slug': 'art...
converted_pledged_amount 1974
country US
created_at 1332823105
creator {'id': 300795038, 'name': 'Sameer Walavalkar',...
currency USD
currency_symbol $
currency_trailing_code True
current_currency USD
deadline 1337287105
disable_communication False
fx_rate 1
goal 5000
id 120596924
is_starrable False
launched_at 1333399105
location {'id': 2468964, 'name': 'Pasadena', 'slug': 'p...
name Nano Art: Reloaded
photo {'ed': 'https://ksr-ugc.imgix.net/assets/011/3...
pledged 1974
profile {'id': 118685, 'name': None, 'blurb': None, 's...
slug nano-art-reloaded
source_url https://www.kickstarter.com/discover/categorie...
spotlight False
staff_pick True
state failed
state_changed_at 1337287105
static_usd_rate 1
urls {'web': {'project': 'https://www.kickstarter.c...
usd_pledged 1974.0
usd_type domestic
或
data.data[1]
Out[61]:
{'backers_count': 37,
'blurb': 'Nano Art will make and market customized pieces, in a variety of materials, featuring etchings smaller than an eyelash.',
'category': {'color': 16760235,
'id': 21,
'name': 'Digital Art',
'parent_id': 1,
'position': 3,
'slug': 'art/digital art',
'urls': {'web': {'discover': 'http://www.kickstarter.com/discover/categories/art/digital%20art'}}},
'converted_pledged_amount': 1974,
'country': 'US',
'created_at': 1332823105,
'creator': {'avatar': {'medium': 'https://ksr-ugc.imgix.net/assets/006/332/754/bd9efceb28856e93ff226c9b853773a9_original.jpg?w=160&h=160&fit=crop&v=1461381464&auto=format&q=92&s=24a8cda7b064a8610c1334200a306a2d',
'small': 'https://ksr-ugc.imgix.net/assets/006/332/754/bd9efceb28856e93ff226c9b853773a9_original.jpg?w=160&h=160&fit=crop&v=1461381464&auto=format&q=92&s=24a8cda7b064a8610c1334200a306a2d',
'thumb': 'https://ksr-ugc.imgix.net/assets/006/332/754/bd9efceb28856e93ff226c9b853773a9_original.jpg?w=40&h=40&fit=crop&v=1461381464&auto=format&q=92&s=a4881fe982e2d57b041e2a591cd3e04e'},
'chosen_currency': None,
'id': 300795038,
'is_registered': True,
'name': 'Sameer Walavalkar',
'urls': {'api': {'user': 'https://api.kickstarter.com/v1/users/300795038?signature=1515881698.259ca61a8b86731ffbea53f82f4a05e8d1d9f965'},
'web': {'user': 'https://www.kickstarter.com/profile/300795038'}}},
'currency': 'USD',
'currency_symbol': '$',
'currency_trailing_code': True,
'current_currency': 'USD',
'deadline': 1337287105,
'disable_communication': False,
'fx_rate': 1,
'goal': 5000,
'id': 120596924,
'is_starrable': False,
'launched_at': 1333399105,
'location': {'country': 'US',
'displayable_name': 'Pasadena, CA',
'id': 2468964,
'is_root': False,
'localized_name': 'Pasadena',
'name': 'Pasadena',
'short_name': 'Pasadena, CA',
'slug': 'pasadena-ca-us',
'state': 'CA',
'type': 'Town',
'urls': {'api': {'nearby_projects': 'https://api.kickstarter.com/v1/discover?signature=1515876022.17e1296a181b009b97c854cfded1e99beeefd9fa&woe_id=2468964'},
'web': {'discover': 'https://www.kickstarter.com/discover/places/pasadena-ca-us',
'location': 'https://www.kickstarter.com/locations/pasadena-ca-us'}}},
'name': 'Nano Art: Reloaded',
'photo': {'1024x576': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=1024&h=576&fit=crop&v=1463681196&auto=format&q=92&s=4fe4bf0d8a75fa43bbf253f8c1eb5710',
'1536x864': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=1552&h=873&fit=crop&v=1463681196&auto=format&q=92&s=76cdc06919b3b8df0f3daae78ab57301',
'ed': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=352&h=198&fit=crop&v=1463681196&auto=format&q=92&s=4446e512c7a07794efcf131e35eb0111',
'full': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=560&h=315&fit=crop&v=1463681196&auto=format&q=92&s=1d312059cce791c9058255f83c123f47',
'key': 'assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg',
'little': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=208&h=117&fit=crop&v=1463681196&auto=format&q=92&s=c386ed08b0c603e1912b1620f9bb58d6',
'med': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=272&h=153&fit=crop&v=1463681196&auto=format&q=92&s=51a7ae3eadcb187a8dd58c14396b0d8c',
'small': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=160&h=90&fit=crop&v=1463681196&auto=format&q=92&s=9b1a141c6269c9940f44e273f416b73e',
'thumb': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=48&h=27&fit=crop&v=1463681196&auto=format&q=92&s=73ef45a6f4df337a942b3a75fec87996'},
'pledged': 1974,
'profile': {'background_color': None,
'background_image_opacity': 0.8,
'blurb': None,
'feature_image_attributes': {'image_urls': {'baseball_card': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=560&h=315&fit=crop&v=1463681196&auto=format&q=92&s=1d312059cce791c9058255f83c123f47',
'default': 'https://ksr-ugc.imgix.net/assets/011/336/473/c6f18bfa9e9933bce11272db919a0bb9_original.jpg?crop=faces&w=1552&h=873&fit=crop&v=1463681196&auto=format&q=92&s=76cdc06919b3b8df0f3daae78ab57301'}},
'id': 118685,
'link_background_color': None,
'link_text': None,
'link_text_color': None,
'link_url': None,
'name': None,
'project_id': 118685,
'should_show_feature_image_section': True,
'show_feature_image': False,
'state': 'inactive',
'state_changed_at': 1425915807,
'text_color': None},
'slug': 'nano-art-reloaded',
'source_url': 'https://www.kickstarter.com/discover/categories/art/digital%20art',
'spotlight': False,
'staff_pick': True,
'state': 'failed',
'state_changed_at': 1337287105,
'static_usd_rate': 1,
'urls': {'web': {'project': 'https://www.kickstarter.com/projects/300795038/nano-art-reloaded?ref=category_newest',
'rewards': 'https://www.kickstarter.com/projects/300795038/nano-art-reloaded/rewards'}},
'usd_pledged': '1974.0',
'usd_type': 'domestic'}
我尝试过转置数据帧并使用for循环来堆叠pd.Series生成的第二列。但它不起作用。
答案 0 :(得分：1)
from pandas.io.json import json_normalize
df = json_normalize(data.data[1])
print (df)
backers_count blurb \
0 37 Nano Art will make and market customized piece...
category.color category.id category.name category.parent_id \
0 16760235 21 Digital Art 1
category.position category.slug \
0 3 art/digital art
category.urls.web.discover \
0 http://www.kickstarter.com/discover/categories...
converted_pledged_amount ... \
0 1974 ...
source_url spotlight staff_pick \
0 https://www.kickstarter.com/discover/categorie... False True
state state_changed_at static_usd_rate \
0 failed 1337287105 1
urls.web.project \
0 https://www.kickstarter.com/projects/300795038...
urls.web.rewards usd_pledged usd_type
0 https://www.kickstarter.com/projects/300795038... 1974.0 domestic
[1 rows x 84 columns]
答案 1 :(得分：1)
这是您的词典示例的一个子集：
d = {
'backers_count':
37,
'blurb':
'Nano Art will make and market customized pieces, in a variety of materials, featuring etchings smaller than an eyelash.',
'category': {
'color': 16760235,
'id': 21,
'name': 'Digital Art',
'parent_id': 1,
'position': 3,
'slug': 'art/digital art',
'urls': {
'web': {
'discover':
'http://www.kickstarter.com/discover/categories/art/digital%20art'
}
}
},
'converted_pledged_amount':
1974,
'country':
'US',
'created_at':
1332823105,
'creator': {
'avatar': {
'medium':
'https://ksr-ugc.imgix.net/assets/006/332/754/bd9efceb28856e93ff226c9b853773a9_original.jpg?w=160&h=160&fit=crop&v=1461381464&auto=format&q=92&s=24a8cda7b064a8610c1334200a306a2d',
'small':
'https://ksr-ugc.imgix.net/assets/006/332/754/bd9efceb28856e93ff226c9b853773a9_original.jpg?w=160&h=160&fit=crop&v=1461381464&auto=format&q=92&s=24a8cda7b064a8610c1334200a306a2d',
'thumb':
'https://ksr-ugc.imgix.net/assets/006/332/754/bd9efceb28856e93ff226c9b853773a9_original.jpg?w=40&h=40&fit=crop&v=1461381464&auto=format&q=92&s=a4881fe982e2d57b041e2a591cd3e04e'
},
'chosen_currency': None,
'id': 300795038,
'is_registered': True,
'name': 'Sameer Walavalkar',
'urls': {
'api': {
'user':
'https://api.kickstarter.com/v1/users/300795038?signature=1515881698.259ca61a8b86731ffbea53f82f4a05e8d1d9f965'
},
'web': {
'user': 'https://www.kickstarter.com/profile/300795038'
}
}
}
}
我创建了一个最小的例子：
df = pd.DataFrame({"data":[d, d]})
如果您要应用从dictionnary到DataFrame的转换，您可以使用map函数：
list_df = df.data.map(lambda d : pd.DataFrame.from_dict(d, orient="index").transpose()).tolist()
然后，您可以连接结果：
df_concat = pd.concat(list_df)
完成此操作后，您可以连接原始DataFrame data和df_concat。