Hi Deepak,
Your requirement seems interesting. Without asking much more about your
intention, you can use weakrefs to keep track of the references.
Here's a sample code for your requirement;
*from collections import defaultdict *
*import weakref *
*
*
*_ref_tracker = defaultdict(list) *
*class TrackRefs(object): *
* def __init__(self): *
* _ref_tracker[self.__class__].append(weakref.ref(self)) *
* def get_objs(self): *
* for ref in _ref_tracker[self.__class__]: *
* if ref(): *
* yield ref() *
*
*
*class User(TrackRefs): *
* def __init__(self, name, id): *
* super(User, self).__init__() *
* self.name = name *
* self.id = id *
*
*
*user1 = User('Harke', 6) *
*user2 = User('Birkhe', 9) *
*user3 = User('Chyante', 69) *
*
*
*for obj in User("", "").get_objs(): #remember i am using an extra object
here *
* if obj.name == 'Chyante': *
* print obj.id*
You could have easily used default dictionary class in python to keep track
of username and ids easily. I would rather use a simple dictionary as a
member variable than keep track of object references ;) .
--
Kailash Budhathoki
On Fri, Mar 16, 2012 at 12:01 PM, Lava Kafle <[email protected]> wrote:
Hashmap !!!!
> Lava Kafle
> Ms by Research in Computer Science
> Kathmandu University
> cell:
> 9841224387
> 9801034557
>
>
>
>
>
>
> On Fri, Mar 16, 2012 at 11:25 AM, Deepak Pant <[email protected]> wrote:
>
> Hello Foss Python Community,
>> I have a query
>>
>> Class User:
>> def __init__(self):
>> self.name=''
>> self.id=''
>> def setuser(self,name,id):
>> self.name=name
>> self.id=id
>>
>>
>> User().setuser('deepak',5)
>> User().setuser('munna',6)
>> User().setuser('howday',9)
>>
>>
>> is there any easier solution i can return objects id that matches name
>> say as
>>
>> for u in User:
>> if(u.name=='deepak'):
>> print u.id
>>
>> I need to find out objects that matches attributes
>> Need to solve this problem Thanks in advance
>>
>>
>> Regards
>> Deepak Pant
>> [email protected]
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