passing variables as object attributes

[misterdi]

On Aug 16, 8:40 pm, Vikas Mahajan <vikas.mahaja... at gmail.com> wrote:
> Hello to all
>
> I am new to python. I am facing problem to use variables as object
> attributes. I have to use loop and dynamically add attributes to a
> object and for this purpose I have to use variables with object names.
>
> For example-:
> Let us say object car has an attribute engine, then
> varname = "engine"
> car.varname = "dummy value"
> is giving me Error: object car does not have attribute varname.
>
> Please tell me how can I use variables as objects attributes.
>
> Thanks.

I'm not a python expert, so this may not be accurate
For me it is easier to define a class that represent the object, and
then set attribute for the object.

for example :
# define a class with no attribute
class Car():
    pass

# instance the class
mycar = Car()
# dynamically set attribute to the instance
newattr = "engine"
setattr(mycar, newattr, "dummy value")
# or dynamically set attribute to the Class so every instance will
inherit it
classattr = "color"
setattr(mycar, classattr, "yellow")

But as I mention, I'm not an expert so maybe it's not a pythonic way
to add attribute to an object.

Cheers,