August 2017
Intermediate to advanced
500 pages
12h 3m
Japanese
Content preview from PythonとJavaScriptではじめるデータビジュアライゼーション
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111
5.3 Python による Web API からのデータの利用
data['data'][0]
Out:
[1,
u'4303993D-76F7-4A5C-914E-FDEA4EAB67BA',
...
u'Food affordability for female-headed household with
children under 18 years',
u'2006-2010',
u'1',
u'AIAN',
u'CA',
u'06',
u'California', ...
これで
Web
から生のページと
JSON
ファイルが取得できたので、
requests
を使って
Web
デー
タ
API
を利用してみましょう。
5.3
Python
による
Web API
からのデータの利用
必要なデータファイルが
Web
上にない場合、多分アプリケーションプログラミングインタフェー
ス（
API
：
Application Programming Interface
）が必要なデータを提供してくれるでしょう。
API
を使うと適切なサーバへリクエストを行い、固定のフォーマットやリクエストで指定したフォー
マットでデータを取得できます。
Web API
で最も人気があるデータフォーマットは
JSON
と
XML
ですが、たくさんの難解な
フォーマットが存在します。
JavaScript
を使ったデータ可視化では、
JSON
（
JavaScript Object
Notation
）が最も望ましいでしょう（「
4.4.7
データ」を参照）。しかも幸い
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