Question

大家好：）在JSON和Python方面，我还是一个新手，今天正在从事一个新项目，非常感谢您的帮助。到目前为止，这就是我所拥有的。我的目的是通过几种不同的方式与Binance API进行交互。

url = 'https://api.binance.com/'
urlWithSymbol = 'https://api.binance.com/api/v1/trades?symbol='


def getRecentTrades(symbol):
    response = requests.get(urlWithSymbol+symbol+'&limit=10')

    # Print the content of the response (the data the server returned)
    print(response.content.decode("utf-8"))

    data = response.json()
    print(type(data))
    print(data)


getRecentTrades('NPXSBTC')

这里一切都很好，只有答复以字典的形式提供给我，我希望能够单独访问“出价”等。你们认为下一步是什么？我是否可以将数据转换为JSON对象？

响应：

{'asks': [['0.00000024', '109846420.00000000', []],
          ['0.00000025', '114178637.00000000', []],
          ['0.00000026', '82322155.00000000', []],
          ['0.00000027', '92902459.00000000', []],
          ['0.00000028', '44228198.00000000', []],
          ['0.00000029', '56824640.00000000', []],
          ['0.00000030', '111613234.00000000', []],
          ['0.00000031', '43773659.00000000', []],
          ['0.00000032', '80669915.00000000', []],
          ['0.00000033', '82725221.00000000', []]],
 'bids': [['0.00000023', '155213182.00000000', []],
          ['0.00000022', '191986504.00000000', []],
          ['0.00000021', '118013185.00000000', []],
          ['0.00000020', '168162758.00000000', []],
          ['0.00000019', '64558205.00000000', []],
          ['0.00000018', '63484191.00000000', []],
          ['0.00000017', '31635740.00000000', []],
          ['0.00000016', '39788788.00000000', []],
          ['0.00000015', '41020041.00000000', []],
          ['0.00000014', '16370913.00000000', []]],
 'lastUpdateId': 5532550}

打印输出：

<class 'list'>
[{'id': 1116367, 'price': '0.00000024', 'qty': '35542.00000000', 'time': 1534169839810, 'isBuyerMaker': False, 'isBestMatch': True}, {'id': 1116368, 'price': '0.00000023', 'qty': '400000.00000000', 'time': 1534169854271, 'isBuyerMaker': True, 'isBestMatch': True}, {'id': 1116369, 'price': '0.00000023', 'qty': '15542.00000000', 'time': 1534169991106, 'isBuyerMaker': True, 'isBestMatch': True}, {'id': 1116370, 'price': '0.00000024', 'qty': '1.00000000', 'time': 1534170015730, 'isBuyerMaker': False, 'isBestMatch': True}, {'id': 1116371, 'price': '0.00000023', 'qty': '19061.00000000', 'time': 1534170017669, 'isBuyerMaker': True, 'isBestMatch': True}, {'id': 1116372, 'price': '0.00000023', 'qty': '39.00000000', 'time': 1534170041722, 'isBuyerMaker': True, 'isBestMatch': True}, {'id': 1116373, 'price': '0.00000024', 'qty': '178943.00000000', 'time': 1534170118065, 'isBuyerMaker': False, 'isBestMatch': True}, {'id': 1116374, 'price': '0.00000023', 'qty': '188.00000000', 'time': 1534170158052, 'isBuyerMaker': True, 'isBestMatch': True}, {'id': 1116375, 'price': '0.00000023', 'qty': '173.00000000', 'time': 1534170160358, 'isBuyerMaker': True, 'isBestMatch': True}, {'id': 1116376, 'price': '0.00000023', 'qty': '32232.00000000', 'time': 1534170293908, 'isBuyerMaker': True, 'isBestMatch': True}]

以退出代码0结束的过程

Answer 1

您可以遍历字典以访问每个出价。

例如：

import requests

url = 'https://api.binance.com/'
urlWithSymbol = 'https://api.binance.com/api/v1/depth?symbol='


def getRecentTrades(symbol):
    response = requests.get(urlWithSymbol+symbol)

    data = response.json()
    print(type(data))
    for bid in data["bids"]:
        print(bid)


getRecentTrades('NPXSBTC')

输出：

<type 'dict'>
[u'0.00000023', u'159089575.00000000', []]
[u'0.00000022', u'187598715.00000000', []]
[u'0.00000021', u'118040187.00000000', []]
[u'0.00000020', u'168707413.00000000', []]
[u'0.00000019', u'64558205.00000000', []]
[u'0.00000018', u'63484191.00000000', []]
[u'0.00000017', u'32063443.00000000', []]
[u'0.00000016', u'40413788.00000000', []]
[u'0.00000015', u'41686707.00000000', []]
[u'0.00000014', u'16842512.00000000', []]
[u'0.00000013', u'8228300.00000000', []]
[u'0.00000012', u'3940729.00000000', []]
[u'0.00000011', u'4739318.00000000', []]
[u'0.00000010', u'5012270.00000000', []]
[u'0.00000009', u'15746312.00000000', []]
[u'0.00000008', u'2100806.00000000', []]
[u'0.00000007', u'3053860.00000000', []]
[u'0.00000006', u'13562956.00000000', []]
[u'0.00000005', u'13869819.00000000', []]
[u'0.00000004', u'18357472.00000000', []]
[u'0.00000003', u'76777773.00000000', []]
[u'0.00000002', u'7518568.00000000', []]
[u'0.00000001', u'10500722.00000000', []]

Answer 2

json是一种数据交换格式。这似乎更多是数据类型操纵问题。您是否可以详细说明要从已发布的示例数据中提取什么？

Answer 3

您可以简单地遍历数据：

for record in data:
    id = record['id']

例如，我可以将数据放入Dataframe中

将熊猫作为pd导入

record_list = []
for records in data:
    rocords_list.append(record['id'],record['qty'])

data = pd.DataFrame（records_lis，columns = ['id'，'qty']）

现在您需要考虑需要哪些列，如果需要提高速度，请使用Numpy进行基本操作。

Answer 4

def getRecentTrades（symbol）：响应= requests.get（lastTradesUrlWithSymbol + symbol +'＆limit = 10'）

# Print the content of the response (the data the server returned)
print(response.content.decode("utf-8"))

data = response.json()
print(type(data))
print(data)

for record in data:
    id = record['id']
    price = record['price']
    qty = record['qty']

    print(str(id),str(price),str(qty))


getRecentTrades('NPXSBTC')

响应：

1116418 0.00000023 44.00000000
1116419 0.00000023 200000.00000000
1116420 0.00000023 1291335.00000000
1116421 0.00000024 135028.00000000
1116422 0.00000023 147.00000000
1116423 0.00000023 48.00000000
1116424 0.00000024 17887.00000000
1116425 0.00000023 172128.00000000
1116426 0.00000023 15006.00000000
1116427 0.00000023 129.00000000

Process finished with exit code 0

逐行阅读JSON词典

4 个答案: