import json

with open("/Users/muthuselvan/Desktop/app-config.json", "r") as jsonFile:
    data = json.load(jsonFile)
    print data
    tmp = data["BROWSER"]
    print "Browser",tmp
    data["BROWSER"] = "NewPath"





with open("/Users/muthuselvan/Desktop/app-config.json", "w") as jsonFile:
    json.dump(data, jsonFile)
