TypeError：列表索引必须是整数（json，python）

-1

原始代码摘自此主旨：rivaldi8/ImpactServlet.py，但因为我使用的api密钥不适用于QUERY_URL，所以我修改了如下代码：TypeError：列表索引必须是整数（json，python）

class Scopus(ImpactService): 
    QUERY_URL = "https://api.elsevier.com/content/search/scopus?query=doi({1})&apiKey={0}&httpAccept=application/json" 
    API_KEY = "7f59af901d2d86f78a1fd60c1bf9426a" 

    def __init__(self, request): 
     self.doi = request.getParameter("doi") 

    def _getServiceResponse(self): 
     return requests.get(self.QUERY_URL.format(self.API_KEY, self.doi)) 

    def _buildResponseToClient(self, serviceResponse): 
     serviceResponseObject = json.loads(serviceResponse.text) 
     citationCount = serviceResponseObject["search-results"]["entry"]["0"]["citedby-count"] 
     linkBack = self._getLinkBack(serviceResponseObject) 
     return self._getJsonDocument(citationCount, linkBack) 

    def _getLinkBack(self, scopusData): 
     linkList = scopusData["search-results"]["entry"]["0"]["link"] 
     linkBackObject = next(link for link in linkList if link["@ref"] == "scopus-citedby") 
     return linkBackObject["@href"]

低于该样品JSON数据可以从该URL检索：

{ 
    "search-results": { 
    "opensearch:totalResults": "1", 
    "opensearch:startIndex": "0", 
    "opensearch:itemsPerPage": "1", 
    "opensearch:Query": { 
     "@role": "request", 
     "@searchTerms": "doi(10.1038/35016500)", 
     "@startPage": "0" 
    }, 
    "link": [ 
     { 
     "@_fa": "true", 
     "@ref": "self", 
     "@href": "https://api.elsevier.com/content/search/scopus?start=0&count=25&query=doi%2810.1038%2F35016500%29&apiKey=7f59af901d2d86f78a1fd60c1bf9426a&httpAccept=application/json", 
     "@type": "application/json" 
     }, 
     { 
     "@_fa": "true", 
     "@ref": "first", 
     "@href": "https://api.elsevier.com/content/search/scopus?start=0&count=25&query=doi%2810.1038%2F35016500%29&apiKey=7f59af901d2d86f78a1fd60c1bf9426a&httpAccept=application/json", 
     "@type": "application/json" 
     } 
    ], 
    "entry": [ 
     { 
     "@_fa": "true", 
     "link": [ 
      { 
      "@_fa": "true", 
      "@ref": "self", 
      "@href": "https://api.elsevier.com/content/abstract/scopus_id/0034729765" 
      }, 
      { 
      "@_fa": "true", 
      "@ref": "author-affiliation", 
      "@href": "https://api.elsevier.com/content/abstract/scopus_id/0034729765?field=author,affiliation" 
      }, 
      { 
      "@_fa": "true", 
      "@ref": "scopus", 
      "@href": "https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0034729765&origin=inward" 
      }, 
      { 
      "@_fa": "true", 
      "@ref": "scopus-citedby", 
      "@href": "https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=0034729765&origin=inward" 
      } 
     ], 
     "prism:url": "https://api.elsevier.com/content/abstract/scopus_id/0034729765", 
     "dc:identifier": "SCOPUS_ID:0034729765", 
     "eid": "2-s2.0-0034729765", 
     "dc:title": "Effect of aquaculture on world fish supplies", 
     "dc:creator": "Naylor R.", 
     "prism:publicationName": "Nature", 
     "prism:issn": "00280836", 
     "prism:volume": "405", 
     "prism:issueIdentifier": "6790", 
     "prism:pageRange": "1017-1024", 
     "prism:coverDate": "2000-06-29", 
     "prism:coverDisplayDate": "29 June 2000", 
     "prism:doi": "10.1038/35016500", 
     "citedby-count": "1386", 
     "affiliation": [ 
      { 
      "@_fa": "true", 
      "affilname": "Stanford University", 
      "affiliation-city": "Palo Alto", 
      "affiliation-country": "United States" 
      } 
     ], 
     "pubmed-id": "10890435", 
     "prism:aggregationType": "Journal", 
     "subtype": "re", 
     "subtypeDescription": "Review", 
     "source-id": "21206" 
     } 
    ] 
    } 
}

基本上，我要检索的"citedby-count"值是1386和在链路其中网址即"https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=0034729765&origin=inward"。因此，预期输出应该返回这样的：

{ 
    "citationCount": 1386, 
    "linkBack": "https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=0034729765&origin=inward" 
}

我与上面的代码是错误：

citationCount = serviceResponseObject["search-results"]["entry"]["0"]["citedby-count"] 
    TypeError: list indices must be integers

如何解决TypeError: list indices must be integers问题？

在此先感谢。

来源

2017-07-31 euler

是的，你有名单里面的字典。你有没有尝试过使用整数来索引这些？您当前正在使用“0”字符串。 –

您已经使用字符串索引，而不是整数索引变化

citationCount = serviceResponseObject["search-results"]["entry"]["0"]["citedby-count"]

到

citationCount = serviceResponseObject["search-results"]["entry"][0]["citedby-count"]

来源

2017-07-31 07:03:02 Sajin

serviceResponseObject [ “搜索结果”] [ “进入”]是一个列表，该索引list must be a integer

change serviceResponseObject["search-results"]["entry"]["0"] to

serviceResponseObject["search-results"]["entry"][0]

来源

2017-07-31 07:06:14 tuannv562

TypeError：列表索引必须是整数（json，python）

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