python – 将多个json数据添加到panda数据帧

我正在使用api获取3个json数据,我想将这些数据添加到1个熊猫数据帧中

这是我的代码
我传递的书籍包含书籍ID为x,这3个id返回3个不同的json对象及所有书籍信息.

for x in books:
newDF = pd.DataFrame()
bookinfo = requests.get( http://books.com/?x})
    books = bookinfo.json() 
    print(books)

这是我印刷书籍后得到的3个数组,

{  
   u'bookInfo':[  
      {  
         u'book_created':u'2017-05-31',
         u'book_rating':3,
         u'book_sold':0
      },
      {  
         u'book_created':u'2017-05-31',
         u'book_rating':2,
         u'book_sold':1
      },
   ],
   u'book_reading_speed':u'4.29',
   u'book_sale_date':u'2017-05-31'
}
{  
   u'bookInfo':[  
      {  
         u'book_created':u'2017-05-31',
         u'book_rating':3,
         u'book_sold':0
      },
      {  
         u'book_created':u'2017-05-31',
         u'book_rating':2,
         u'book_sold':1
      },
   ],
   u'book_reading_speed':u'4.29',
   u'book_sale_date':u'2017-05-31'
}
{  
   u'bookInfo':[  
      {  
         u'book_created':u'2017-05-31',
         u'book_rating':3,
         u'book_sold':0
      },
      {  
         u'book_created':u'2017-05-31',
         u'book_rating':2,
         u'book_sold':1
      },
   ],
   u'book_reading_speed':u'4.29',
   u'book_sale_date':u'2017-05-31'
}    

我想做的只是从三个数组中取出u’bookInfo并将它们分成1个数据帧

解决方法:

IIUC：

pd.concat(
    pd.DataFrame([requests.get( http://books.com/?x}).json() for x in books]),
    ignore_index=True)

或者,您可以将JSON响应收集到列表中并执行以下操作：

In [30]: pd.concat([pd.DataFrame(x['bookInfo']) for x in d], ignore_index=True)
Out[30]:
  book_created  book_rating  book_sold
0   2017-05-31            3          0
1   2017-05-31            2          1
2   2017-05-31            3          0
3   2017-05-31            2          1
4   2017-05-31            3          0
5   2017-05-31            2          1

要么

In [25]: pd.DataFrame([y for x in d for y in x['bookInfo']])
Out[25]:
  book_created  book_rating  book_sold
0   2017-05-31            3          0
1   2017-05-31            2          1
2   2017-05-31            3          0
3   2017-05-31            2          1
4   2017-05-31            3          0
5   2017-05-31            2          1

其中d是一个dicts列表,你发布了：

In [20]: d
Out[20]:
[{'bookInfo': [{'book_created': '2017-05-31',
    'book_rating': 3,
    'book_sold': 0},
   {'book_created': '2017-05-31', 'book_rating': 2, 'book_sold': 1}],
  'book_reading_speed': '4.29',
  'book_sale_date': '2017-05-31'},
 {'bookInfo': [{'book_created': '2017-05-31',
    'book_rating': 3,
    'book_sold': 0},
   {'book_created': '2017-05-31', 'book_rating': 2, 'book_sold': 1}],
  'book_reading_speed': '4.29',
  'book_sale_date': '2017-05-31'},
 {'bookInfo': [{'book_created': '2017-05-31',
    'book_rating': 3,
    'book_sold': 0},
   {'book_created': '2017-05-31', 'book_rating': 2, 'book_sold': 1}],
  'book_reading_speed': '4.29',
  'book_sale_date': '2017-05-31'}]