使用Python访问JSON中的多个对象时遇到问题

I am trying to parse through a web-service and retrieve certain records, however I am consistently receiving a KeyError for responses with more than one object. These records are returned in intervals, so sometimes I might receive one record and others I might receive 300. If I receive one record, the logic of my code works, if there are multiple items then the code doesn't work. I am trying to parse through a web-service and