What kind of class does my instance belong too?

[Peter Stöhr]

Hi *,

thanks to everyone for the fast help!
The isinstanceof()-function is what I was looking for ...

    Peter

Steve Holden wrote:
> 
> Peter Stöhr wrote:
> >
> > Hi out there in the python-universe,
> >
> > I'm having a small problem and after looking at the docs I was not able
> > to solve it by myself. So maybe someone out there can help me.
> >
> > Lets assume I have create a class Spam and a class Eggs derived form
> > class Spam.
> > In one of the methods I have to implement a behaviours depending on
> > whether a passed instance is an instance of class Spam or something
> > different, for example:
> >
> > class Spam:
> >     ...
> >
> > class Eggs(Spam):
> >     def doSomething(self, aArg):
> >         if aArg is instance of Spam:
> >             self.spamIt()
> >         else:
> >             seld.doSoemthingDifferent()
> >
> > What I try to figure out is what is the correct way to write such an
> > if-statement ?
> >
> > I've tried the builtin function type(). The result <type 'instance'> is
> > correct bit doesn't solve my problem :-(
> >
> > Thanks in advance
> >     Peter
> 
> From the 2.0 docs (also available in 1.5.2):
> 
> isinstance (object, class)
>    Return true if the object argument is an instance of the class argument,
>    or of a (direct or indirect) subclass thereof. Also return true if class
>    is a type object and object is an object of that type. If object is not
>    a class instance or a object of the given type, the function always
>    returns false. If class is neither a class object nor a type object,
>    a TypeError exception is raised.
> 
> should give you what you want.
> 
> introspective-ly y'rs - steve
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