Python 具有子字符串的API JSON字典返回TypeError:字符串索引必须是整数_Python_Json

Python 具有子字符串的API JSON字典返回TypeError:字符串索引必须是整数

python json

Python 具有子字符串的API JSON字典返回TypeError:字符串索引必须是整数,python,json,Python,Json,我使用以下代码从API中提取json提要： import requests import json url = "https://apidojo-yahoo-finance-v1.p.rapidapi.com/stock/v2/get-holders" querystring = {"symbol":"zwu.to"} headers = { 'x-rapidapi-key': "12345",

我使用以下代码从API中提取json提要：

import requests
import json

url = "https://apidojo-yahoo-finance-v1.p.rapidapi.com/stock/v2/get-holders"

querystring = {"symbol":"zwu.to"}

headers = {
    'x-rapidapi-key': "12345",
    'x-rapidapi-host': "67890"
    }

response = requests.request("GET", url, headers=headers, params=querystring)
source = response.json()

print("Source is: ",type(source))

for item in source["fundProfile"]["feesExpensesInvestment"]:
    fees = item["annualReportExpenseRatio"]["fmt"]
    print("Items are: ", type(item))

但是，当我试图获得费用的价值时，我陷入了：

TypeError:字符串索引必须是整数

我尝试使用json.dumps和json.loads将子字符串转换为字典，但没有成功

以下是我打印时得到的类型：

资料来源是：项目包括：

以下是源对象的结构：

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Pipeline Corp","holdingPercent":{"raw":0.0588,"fmt":"5.88%"}},{"symbol":"ZUT.TO","holdingName":"BMO Equal Weight Utilities ETF","holdingPercent":{"raw":0.0574,"fmt":"5.74%"}},{"symbol":"T.TO","holdingName":"TELUS Corp","holdingPercent":{"raw":0.053600002,"fmt":"5.36%"}},{"symbol":"ENB.TO","holdingName":"Enbridge Inc","holdingPercent":{"raw":0.052199997,"fmt":"5.22%"}},{"symbol":"FTS.TO","holdingName":"Fortis Inc","holdingPercent":{"raw":0.0519,"fmt":"5.19%"}},{"symbol":"EMA.TO","holdingName":"Emera Inc","holdingPercent":{"raw":0.051,"fmt":"5.10%"}},{"symbol":"TRP.TO","holdingName":"TC Energy Corp","holdingPercent":{"raw":0.0509,"fmt":"5.09%"}},{"symbol":"BCE.TO","holdingName":"BCE Inc","holdingPercent":{"raw":0.0502,"fmt":"5.02%"}},{"symbol":"EXC","holdingName":"Exelon Corp","holdingPercent":{"raw":0.049099997,"fmt":"4.91%"}},{"symbol":"VZ","holdingName":"Verizon Communications 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16.33"},"messageBoardId":"finmb_414472744","fiftyTwoWeekHigh":{"raw":19.43,"fmt":"19.43"},"fiftyTwoWeekHighChangePercent":{"raw":-0.16881114,"fmt":"-16.88%"},"uuid":"9af002d6-34e0-3f56-b496-eb432a8bc694","market":"ca_market","fiftyTwoWeekLow":{"raw":11.48,"fmt":"11.48"},"regularMarketChangePercent":{"raw":-1.4643062,"fmt":"-1.46%"},"fullExchangeName":"Toronto","tradeable":false},"ZUT.TO":{"sourceInterval":15,"quoteSourceName":"Delayed Quote","regularMarketOpen":{"raw":25.9,"fmt":"25.90"},"exchange":"TOR","regularMarketTime":{"raw":1611953997,"fmt":"3:59PM EST"},"fiftyTwoWeekRange":{"raw":"14.53 - 27.14","fmt":"14.53 - 27.14"},"regularMarketDayHigh":{"raw":25.94,"fmt":"25.94"},"shortName":"BMO EQUAL WEIGHT UTILITIES INDE","longName":"BMO Equal Weight Utilities Index 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25.94"},"messageBoardId":"finmb_83524588","fiftyTwoWeekHigh":{"raw":27.14,"fmt":"27.14"},"fiftyTwoWeekHighChangePercent":{"raw":-0.050847426,"fmt":"-5.08%"},"uuid":"674b2651-4b39-3f74-8dcd-9f99c0b425fd","market":"ca_market","fiftyTwoWeekLow":{"raw":14.53,"fmt":"14.53"},"regularMarketChangePercent":{"raw":-0.7321793,"fmt":"-0.73%"},"fullExchangeName":"Toronto","tradeable":false}},"mktmData":{}}

请告诉我如何解决这个问题？

如果您提供了从API返回的JSON，那么我们可以查看它的结构并给出更好的答案，这会有所帮助

您确定要获取的子字符串是有效的JSON格式吗？否则，您将无法对它们执行

json.loads（）

如果它们不是JSON格式或任何其他已知的结构化格式，您可能必须依靠使用自定义代码解析字符串。

当我尝试在本地计算机上运行代码时，我得到以下响应：

{'message': "API doesn't exists"}

但我认为这里的问题是，您的响应被格式化为一系列响应。因此，您必须通过

for

循环访问它们

如果这不能解决您的问题，请共享您得到的JSON响应的示例输出，以便更容易调试问题。

根据您提供的结构，这就是您所需要的：

print(source["fundProfile"]["feesExpensesInvestment"]["annualReportExpenseRatio"])

输出：

 {'raw': 0.0064999997, 'fmt': '0.65%'}

要仅获取

fmt

值，请使用以下命令：

print(source["fundProfile"]["feesExpensesInvestment"]["annualReportExpenseRatio"]["fmt"])

输出：

0.65%

如果结果有多个键值对，您可以使用循环对它们进行迭代，并获取所有值。

如果

项

的类型如您所指出的

str

，则不能使用

项[“annualReportExpenseRatio”][“fmt”]

。请提供

源

对象的结构，以便我们进一步提供帮助。我刚刚根据要求添加了源结构，API将要求我的帐户凭据正常工作。您好，我看不出这有什么原因不起作用。我建议您做的是，因为您得到的JSON不是数组，所以请避免使用for循环。只需使用

source[“fundProfile”][“feesepensesvestment”][“annualReportExpenseRatio”][“fmt”]

访问您所需的金额，我认为您不需要for循环，除非所需的记录位于JSON对象数组中。如果我不使用for循环，我会得到9次值，有没有办法将其限制为一次？没有，这就是我说的，如果响应是数组，那么必须使用for循环。您共享的示例没有将其显示为数组，这就是为什么我建议不要使用for loop现在就可以了：print（来源[“fundProfile”][“FeesePensesInvestment”][“annualReportExpenseRatio”][“fmt”]），但我得到了9次0.65%，我怎么能只得到一次呢？（回到最初的问题，如果我使用for循环，它将在不知道完整输入的情况下返回str keyerror，我不确定我能提供多少帮助。可能只是将元素添加到列表中，如果您不想全部使用，则仅使用第一个元素。我添加了从API发送的完整json。我不明白您为什么需要循环。我得到了所需的结果。）只需打印即可输出（源代码[“fundProfile”][“FeesePensesInvestment”][“annualReportExpenseRatio”]）我爱你，伙计！！！现在可以用了！！！一整天都被困在里面了…因为我无意中缩进了你的代码，所以一直在循环。。。

print(source["fundProfile"]["feesExpensesInvestment"]["annualReportExpenseRatio"]["fmt"])