python 2 字典的基本使用

dicVisit={}

if not  dicVisit.has_key(visitKey):#不存在
    diaSet = set()
    diaSet.add(diagnoseContent)
    dicVisit[visitKey]=diaSet
    #print ("new==="+visitKey + "-----"+diagnoseContent)
else:
    #取出字典中对应元素值，是个 set,并将诊断加进去
    originalDiaSet=dicVisit[visitKey]
    # for item in originalDiaSet:
    #     print item
    originalDiaSet.add(diagnoseContent)

遍历：

  for key in dicVisitList.keys():
        valueDic = dicVisitList[key]
        jsonData.append(valueDic)
        print(valueDic)