Question

我的json文件看起来像这样，我试图在for循环中访问元素syslog。

{
  "cleanup":{
    "folderpath":"/home/FBML7HR/logs",
    "logfilename":""
  },
  "preparation":{
    "configuration":{
      "src_configfile":"src.cfg",
      "dest_configfile":"/var/home/FBML7HR/etc/vxn.cfg"
    },
    "executable_info1":[
      {
        "login_info":{
          "hostname":"10.4.0.xxx",
          "username":"***",
          "password":"***"
        }
      },
      {
        "command":{
          "folderpath":"/var/home/FBML7HR/SrcCode/vxnservers/fdchost/north/test/hostsim/",
          "processname":"northhostsim",
          "parameters":"-d"
        }
      }
    ],
    "executable_info2":[
      {
        "login_info":{
          "hostname":"10.4.0.xxx",
          "username":"***",
          "password":"***"
        }
      },
      {
        "command":{
          "folderpath":"/var/home/FBML7HR/SrcCode/vxnservers/fdchost/north/build/Linux-2.6.18-194.8.1.el5/bin",
          "processname":"northhost",
          "parameters":"-s brazil -d"
        }
      }
    ],
    "executable_info3":[
      {
        "login_info":{
          "hostname":"10.4.0.xxx",
          "username":"***",
          "password":"***"
        }
      },
      {
        "command":{
          "folderpath":"cd /var/home/xxx/SrcCode/vxnservers/fdchost/north/test/vxnclient_mt",
          "processname":"vxnclient_north_mt",
          "parameters":"0 320 205 14897 16880 60000 60000 2 2"
        }
      }
    ]
  },
  "execution":[
    {
      "test_case":{
        "scriptname":"/var/home/FBML7HR/test/testcase1.sh",
        "testreport":{
          "syslog":"/var/log/messages",
          "backupsyslog":"backuplogs1.txt",
          "clientsimlog":"/var/home/FBML7HR/test/out.log",
          "backupclientsimlog":"Clientlogs1.txt"
        }
      }
    },
    {
      "test_case":{
        "scriptname":"/var/home/FBML7HR/test/testcase2.sh",
        "testreport":{
          "syslog":"/var/log/messages",
          "backupsyslog":"backuplogs2.txt",
          "clientsimlog":"/var/home/FBML7HR/test/out.log",
          "backupclientsimlog":"Clientlogs2.txt"
        }
      }
    }
  ],
  "verification":{
    "testreport":{
      "syslog":"/var/log/messages",
      "backupsyslog":"backuplogs.txt",
      "reportfilename":"/var/home/FBML7HR/test/out.log",
      "backuplogfile":"Clientlogs.txt"
    }
  }
}

我这样做：

for i in data['execution']:
    cmd = data['execution'][i]['test_case']['scriptname']

但我收到的错误是＆＃34; TypeError：list indices必须是整数，而不是dict＆＃34;。我是python（和json）的新手。任何人都可以提出我出错的地方吗？

Answer 1

您正在循环data['execution']，而非指数引用的列表中的值。

直接使用这些值（字典）直接：

for i in data['execution']:
    cmd = i['test_case']['scriptname']

您可能想要给出一个更有意义的循环名称：

for entry in data['execution']:
    cmd = entry['test_case']['scriptname']

Answer 2

你可以试试这个，它对我有用

dataArray=data['execution']
for i in range(len(dataArray)):
    cmd = dataArray[i]['test_case']['scriptname']

这完全是按索引循环，所以不会有任何混淆，
对我来说这非常简单易懂

TypeError：list indices必须是整数，而不是dict

2 个答案: