JSON键值在Python中返回错误

我有一个脚本，我希望可以使用NumPy在地理数据库中创建一个要素类。有几件事情正在发生，当我发送我的请求时，发送给服务器的关联json数据与我的响应不同，因此我无法确定我的关键值（如果有）。我最终想要一个键值并循环嵌套项目以用作要素类中的字段。JSON键值在Python中返回错误

代码：

import requests 
import json 
import jsonpickle 
import arcpy 
import json 
import numpy 
import requests 


fc = "C:\MYLATesting.gdb\MYLA311" 
if arcpy.Exists(fc): 
    arcpy.Delete_management(fc) 

f = open('C:\Users\Administrator\Desktop\myla311.json', 'r') 

data = jsonpickle.encode(jsonpickle.decode(f.read())) 

url = "myURL.com" 
headers = {'Content-type': 'text/plain', 'Accept': '/'} 

r = requests.post(url) 

parsed_json = r.json() 

sr = arcpy.SpatialReference(4326) 

response = requests.post(url, data=data, headers=headers) 
f.close() 

ndtype = numpy.dtype([ 
    ('Comment', 'S48') 
]) 

vehicles = [] 
for item in parsed_json["La311ServiceRequestNotes"]: 
    vehicles.append(tuple(item[k] for k in ndtype.names)) 

narr = numpy.array(vehicles, ndtype) 
arcpy.da.NumPyArrayToFeatureClass(narr, fc, [34.1728677, -118.5389413], sr) 


print response.text

JSON发送到服务器：

{ 
     "MetaData": {}, 
     "RequestSpecificDetail": { 
      "ParentSRNumberForLink": "" 
     }, 
     "SRData": { 
      "Anonymous": "Y", 
      "Assignee": "", 
      "CreatedByUserLogin": "", 
      "CustomerAccessNumber": "", 
      "LADWPAccountNo": "", 
      "Language": "English", 
      "ListOfLa311GisLayer": {}, 
      "ListOfLa311ServiceRequestNotes": { 
       "La311ServiceRequestNotes": [ 
        { 
         "Comment": "hxhdudi", 
         "CommentType": "Feedback", 
         "FeedbackSRType": "Weed Abatement for Pvt Parcels", 
         "IsSrNoAvailable": "N" 
        }, 
        { 
         "Comment": "", 
         "CommentType": "External", 
         "CreatedByUser": "", 
         "IsSrNoAvailable": "N" 
        } 
       ] 
      }, 
      "LoginUser": "", 
      "MobilOS": "Android", 
      "NewContactEmail": "", 
      "NewContactFirstName": "", 
      "NewContactLastName": "", 
      "NewContactPhone": "", 
      "Owner": "Other", 
      "ParentSRNumber": "", 
      "Priority": "Normal", 
      "SRCommunityPoliceStation": "RAMPART", 
      "SRType": "Feedback", 
      "ServiceDate": "01/22/2015", 
      "Source": "Mobile App", 
      "Status": "Open", 
      "UpdatedByUserLogin": "" 
     } 
    }

错误：

line 37, in <module> 
    for item in parsed_json["La311ServiceRequestNotes"]: 
KeyError: 'La311ServiceRequestNotes'

样品成功的请求输出全光照的PG只请求模块和JSON数据提交POST请求：

{"status":{"code":311,"message":"Service Request Successfully Submited","cause":""},"Response":{"PrimaryRowId":"1-3J1UX","ListOfServiceRequest":{"ServiceRequest":[{"SRNumber":"1-5927721"}]}}}

出于测试目的，我希望至少到输出SRNumber写信给我的要素类。

来源

2015-02-11 Geoffrey West

parsed_json是什么样的？ – 2015-02-11 07:48:16

您不在此处发布*任何内容：'requests.post（url）'。您没有传入数据或标题。 – 2015-02-11 07:52:00

你的'parsed_json'变量包含响应json。你能在你的问题中发布第一个请求的回复吗？ – thiruvenkadam 2015-02-11 08:01:09

您是不是首先需要选择SRData字典？

parsed_json["SRData"]["La311ServiceRequestNotes"]

到底什么是parsed_json？由于它给你一个KeyError，它是一个字典。它的钥匙是什么？

来源

2015-02-11 08:59:20 hpaulj

这会引发类似的错误。 – 2015-02-11 17:14:24

钥匙是什么？ – hpaulj 2015-02-11 17:42:10

我误解了这个，但是设置我的解析的json为'parsed_json = [“SRData”] [“La311ServiceRequestNotes”]'throws'parsed_json = [“SRData”] [“La311ServiceRequestNotes”]' TypeError：list indices必须是整数，不是str'' – 2015-02-11 17:47:41

JSON键值在Python中返回错误

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