我能'；t使用python从JSON获取数据

我似乎无法从使用JSON的网站API获取最后记录的价格。我试着找出错误，但我觉得没问题。代码是用python编写的 这是我必须获取的Url：

Python 3.7

import requests


URL = "https://api.independentreserve.com/Public/GetMarketSummary?"

CurrencyCode = "xbt"
SecondaryCode = "aud"
PARAMS = {'primaryCurrencyCode': CurrencyCode, '&secondaryCurrencyCode': SecondaryCode}
r = requests.get(url=URL, params=PARAMS)

data = r.json()


lastprice = data['LastPrice']


print("Last Price:%s" % lastprice)

这是固定密码

import requests


URL = "https://api.independentreserve.com/Public/GetMarketSummary?"

CurrencyCode = "xbt"
SecondaryCode = "aud"
PARAMS = {'primaryCurrencyCode': CurrencyCode, 'SecondaryCurrencyCode': SecondaryCode}
r = requests.get(url=URL, params=PARAMS)

data = r.json()


lastprice = data['LastPrice']


print("Last Price:%s" % lastprice)

问题出在

参数中。您需要将
“&secondaryCurrencyCode”
更改为
“secondaryCurrencyCode”

如果您打印了
数据
dict，您会看到：

{'Message'：'Secondary Currency code is required'}
删除
中的
&
“&Secondary Currency code”
将解决此问题

固定代码如下：

import requests

URL = "https://api.independentreserve.com/Public/GetMarketSummary?"

CurrencyCode = "xbt"
SecondaryCode = "aud"
PARAMS = {'primaryCurrencyCode': CurrencyCode, 'secondaryCurrencyCode': SecondaryCode}
r = requests.get(url=URL, params=PARAMS)

data = r.json()


lastprice = data['LastPrice']

print("Last Price:%s" % lastprice)

API需要的是
secondaryCurrencyCode
而不是
&secondaryCurrencyCode

使用params时不需要&签名