元组

a = {"name":"zzx",
     "age":21,
     "sex":"male"
     }
print a.keys()
print a.values()
for key in a:
    print u"key:",key
    print u"value:",a[key]


a["online"]=True
print u"添加后的元组为",a

['age', 'name', 'sex']
[21, 'zzx', 'male']
key: age
value: 21
key: name
value: zzx
key: sex
value: male
添加后的元组为 {'age': 21, 'online': True, 'name': 'zzx', 'sex': 'male'}