import json
with open('data.json') as data_file:    
    data = json.load(data_file)

{"us":"ns1.cyberciti.com", "uk":"ns2.cyberciti.biz", "asia":"ns3.cyberciti.org"  }

def openDbase(dbfilename1, dbfilename):
            with open(dbfilename) as myfile:
                data_new = json.load(myfile)
            
                for d, a in data_new:
                        print d, a

def openDbase(dbfilename1, dbfilename):
            with open(dbfilename) as myfile:
                data_new = json.load(myfile)
            
                for d in data_new:
                        print d

uk
us
asia

for d, a in data_new.items():

dbfile = open(dbfilename, 'a+')
            dbfile.seek(1, 0)
            dbfile.write(db)
            dbfile.close()