Tim Daneliuk wrote:
>I am a bit confused. I was under the impression that:
>
> class foo(object):
> x = 0
> y = 1
>
> means that x and y are variables shared by all instances of a class.
> But when I run this against two instances of foo, and set the values
> of x and y, they are indeed unique to the *instance* rather than the
> class.
"set" as in:
obj = foo()
obj.x = 10 # set x
?
if so, the "obj.x=" line is *adding* an instance variable to the "x" object,
which will
then hide the "x" at the class level.
>>> class foo(object):
... x = 0
... y = 1
...
>>> obj = foo()
>>> obj.__dict__
{}
>>> obj.x
0
>>> obj.y
1
>>> foo.x
0
>>> obj.x = 10
>>> obj.__dict__
{'x': 10}
>>> obj.x
10
>>> foo.x
0
if you want to assign to the class variable, assign to the class variable:
>>> obj = foo()
>>> obj.x
0
>>> foo.x = 20
>>> obj.__dict__
{}
>>> obj.x
20
>>> foo().x
20
</F>
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