I apologize for asking maybe a very trivial question.
I have a new class object A with slots. One of the slots is, for
example, object spam. Object spam, in turn, also has slots and one of
them is attribute eggs. I need to assign a new value to eggs. In other
words, I need to perform the following:
A.spam.eggs=newValue
The problem is that I have only a string s='spam.eggs' with which to
work, so I cannot write an expression written above. I tried to use
setattr:
setattr(A, s, newValue)
but this does not work. It says that object A does not have attribute
spam.eggs
How would you do it? TIA. 4 1446
Alex wrote: I apologize for asking maybe a very trivial question. I have a new class object A with slots. One of the slots is, for example, object spam. Object spam, in turn, also has slots and one of them is attribute eggs. I need to assign a new value to eggs. In other words, I need to perform the following:
A.spam.eggs=newValue
The problem is that I have only a string s='spam.eggs' with which to work, so I cannot write an expression written above. I tried to use setattr:
setattr(A, s, newValue)
but this does not work. It says that object A does not have attribute spam.eggs
since "eggs" is an attribute of the "spam" attribute, you need to fetch
the latter first:
setattr(getattr(A, "spam"), "eggs")
</F>
Alex wrote: I apologize for asking maybe a very trivial question. I have a new class object A with slots. One of the slots is, for example, object spam. Object spam, in turn, also has slots and one of them is attribute eggs. I need to assign a new value to eggs. In other words, I need to perform the following:
A.spam.eggs=newValue
The problem is that I have only a string s='spam.eggs' with which to work, so I cannot write an expression written above. I tried to use setattr:
setattr(A, s, newValue)
but this does not work. It says that object A does not have attribute spam.eggs
since "eggs" is an attribute of the "spam" attribute, you need to fetch
the latter first:
setattr(getattr(A, "spam"), "eggs")
</F>
Great! Thanks, it works (of course).
Great! Thanks, it works (of course). This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
by: Eric |
last post by:
Slightly off topic, i know, but here goes:
I'm trying to xlate a module of mine to C++. Only problem is, it makes
heavy use of "setattr". Anyone know a straightforward way to do
"setattr" in C++...
|
by: Gerson Kurz |
last post by:
I stumbled across this (while using my homebrewn enum class):
class test:
pass
instance = test()
setattr(instance, "THIS :*2+~# IS OBVIOUSLY INVALID", 123)
I would've expected some kind of...
|
by: kramb64 |
last post by:
I'm trying to use setattr inside a module.
From outside a module it's easy:
import spam
name="hello"
value=1
setattr(spam, name, value)
But if I want to do this inside the module spam...
|
by: Alex |
last post by:
I apologize for asking maybe a very trivial question.
I have a new class object A with slots. One of the slots is, for
example, object spam. Object spam, in turn, also has slots and one of
them...
|
by: Paulo da Silva |
last post by:
Hi!
In a class C, I may do setattr(C,'x',10).
Is it possible to use getattr/setattr for variables not inside
classes or something equivalent? I mean with the same result as
exec("x=10").
...
|
by: Nathan Harmston |
last post by:
Hi,
I m trying to implement an object which contains lazy" variables. My
idea is to alter the getattr and the setattr methods. However I keep
on getting a recursion error.
My idea is that the...
|
by: james_027 |
last post by:
hi,
My main purpose for using setattr(object, attr, value) for assign
values from a dict that has some keys that may not be present on some
object's attibute, which makes it work for me. My...
|
by: Rotlaus |
last post by:
2 weeks ago i asked for a etended getattr() which worked really fine,
but now i would love to have a extended setattr() as well.
Lets assume i have some classes:
class A(object):
def...
|
by: maestro |
last post by:
Why are these functions there? Is it somehow more idiomatic to use
than to do obj.field ?
Is there something you can with them that you can't by obj.field
reference?
|
by: taylorcarr |
last post by:
A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...
|
by: Charles Arthur |
last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
|
by: aa123db |
last post by:
Variable and constants
Use var or let for variables and const fror constants.
Var foo ='bar';
Let foo ='bar';const baz ='bar';
Functions
function $name$ ($parameters$) {
}
...
|
by: ryjfgjl |
last post by:
If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...
|
by: emmanuelkatto |
last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud.
Please let me know.
Thanks!
Emmanuel
|
by: nemocccc |
last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
|
by: Hystou |
last post by:
There are some requirements for setting up RAID:
1. The motherboard and BIOS support RAID configuration.
2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...
|
by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
|
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...
| |