473,714 Members | 2,580 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Getting a dictionary from an object

Hello.

I would like to have a quick way to create dicts from object, so that a
call to foo['bar'] would return obj.bar.

The following works, but I would prefer to use a built-in way if one
exists. Is there one?

Thanks in advance.

class dictobj(dict):
"""
class dictobj(dict):
A dictionary d with an object attached to it,
which treats d['foo'] as d.obj.foo.
"""
def __init__(self, obj):
self.obj = obj
def __getitem__(sel f, key):
return self.obj.__geta ttribute__(key)

--
Thanos Tsouanas .: My Music: http://www.thanostsouanas.com/
http://thanos.sians.org/ .: Sians Music: http://www.sians.org/
Jul 23 '05
31 2577
Thanos Tsouanas wrote:

I'm not sure what you're getting at, but have you tried this:

class A(object):
def __getitem__(sel f, ky):
return self.__dict__[ky]

for example:
class A(object): def __init__(self,a ,b,c):
self.a = a
self.b = b
self.c = c
def __getitem__(sel f, ky):
return self.__dict__[ky]

a = A(1,2,3)
a['a'] 1 a['b'] 2
Hello.

I would like to have a quick way to create dicts from object, so that a
call to foo['bar'] would return obj.bar.

The following works, but I would prefer to use a built-in way if one
exists. Is there one?

Thanks in advance.

class dictobj(dict):
"""
class dictobj(dict):
A dictionary d with an object attached to it,
which treats d['foo'] as d.obj.foo.
"""
def __init__(self, obj):
self.obj = obj
def __getitem__(sel f, key):
return self.obj.__geta ttribute__(key)

Aug 4 '05 #31
Thanos Tsouanas wrote:

I'm not sure what you're getting at, but have you tried this:

class A(object):
def __getitem__(sel f, ky):
return self.__dict__[ky]

for example:
class A(object): def __init__(self,a ,b,c):
self.a = a
self.b = b
self.c = c
def __getitem__(sel f, ky):
return self.__dict__[ky]

a = A(1,2,3)
a['a'] 1 a['b'] 2
Hello.

I would like to have a quick way to create dicts from object, so that a
call to foo['bar'] would return obj.bar.

The following works, but I would prefer to use a built-in way if one
exists. Is there one?

Thanks in advance.

class dictobj(dict):
"""
class dictobj(dict):
A dictionary d with an object attached to it,
which treats d['foo'] as d.obj.foo.
"""
def __init__(self, obj):
self.obj = obj
def __getitem__(sel f, key):
return self.obj.__geta ttribute__(key)


Aug 4 '05 #32

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

1
3589
by: none | last post by:
or is it just me? I am having a problem with using a dictionary as an attribute of a class. This happens in python 1.5.2 and 2.2.2 which I am accessing through pythonwin builds 150 and 148 respectively In the sample code you see that I have class Item and class Dict class Dict contains a dictionary called items. The items dictionary will contain instances of Item that are keyed off of the Item name. In __main__ I create two...
26
4060
by: Alan Silver | last post by:
Hello, I have a server running Windows Server 2003, on which two of the web sites use the MegaBBS ASP forum software. Both sites suddenly developed the same error, which seems to be connected to the dictionary object. After some tinkering, I whittled it down to the following (complete) ASP... <%@ CodePage=65001 Language="VBScript"%>
5
14802
by: David Rasmussen | last post by:
If I have a string that contains the name of a function, can I call it? As in: def someFunction(): print "Hello" s = "someFunction" s() # I know this is wrong, but you get the idea... /David
2
15948
by: ESPNSTI | last post by:
Hi, I'm trying to use a generics dictionary with a key class that implements and needs IComparable<>. However when I attempt to use the dictionary, it doesn't appear to use the IComparable<> to find the key. In the example below, accessing the dictionary by using the exact key object that was used to add to the dictionary works. (see code comment 1). However, if I attempt to access the dictionary by using a key object that
2
3420
by: jg | last post by:
I was trying to get custom dictionary class that can store generic or string; So I started with the example given by the visual studio 2005 c# online help for simpledictionay object That seem to miss a few things including #endregion directive and the ending class } Is there not a simple way like in dotnet vb? I managed to get the sample to code to this:
4
2324
by: Betina Andersen | last post by:
I have a dictionary object, then I create a new dictionary object and sets it equal to my original, then I pass the new dictionary object to a function that changes some of my values - but then my original dictionary also gets changed and that was not the intention, can someone explain to me why it behaves that way and how do I avoid it, så I van have different dictionary objects? Thanks Betina
5
21610
by: randy1200 | last post by:
I have the following: Dictionary<object, stringd = new Dictionary<object, string>(); I can add entries to the dictionary, and I can loop through the entries I've added to the Dictionary. This all works great. My question is: I'd like to find a way to get just the first key, without looping through the whole Dictionary. I tried the code below, but I get a compile error trying to use an index value on the KeyCollection:
4
14751
by: NullQwerty | last post by:
Hi folks, I have a Dictionary which contains a string key and an object value. I want the object value to point to a property in my class and I want it to be by reference, so that later on I can change the value of the property through the dictionary. I am having difficulty making the value be by reference. Is this possible? I've even tried unsuccessfully to use unsafe code with pointers.
6
10176
by: GiJeet | last post by:
hello, I'm trying to use a dictionary as a class member. I want to use a property to get/set the key/value of the dictionary but I'm confused as how to use a dictionary as a property. Since there are 2 parts, I don't know how to setup the get/sets. I tried searching but could not find any examples. I'd appreciate an example of how to get/ set the two parts of a dictionary via a property of a class. tia
0
8704
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
9307
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
9170
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
0
9009
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
7946
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
0
5943
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
4462
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
1
3155
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
2
2514
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.