Python Script
Amimo Benja
amimobenja08 at gmail.com
Fri Dec 13 01:26:52 EST 2013
On Thursday, December 12, 2013 9:59:26 PM UTC+3, MRAB wrote:
> On 12/12/2013 18:05, Amimo Benja wrote:
>
> > I have an issue with a Python script that I will show as follows:
>
> > http://codepad.org/G8Z2ConI
>
> >
>
> > Assume that you have three (well defined) classes: AirBase and VmNet,
>
> > . VmNet has got a method that is called recursively each time an HTTP
>
> > response is received. The variable recordTuple needs to be built
>
> > independently for each instance of VmNet that is created. However,
>
> > the mentioned variable is being overwritten across every instance, so
>
> > if you try to get it from vmnet_instance_y, you would get exactly the
>
> > same than retrieving it from vmnet_instance_x.
>
> >
>
> > � What is the code issue? I need to use this script in a project and
>
> > I don't know how to proceed.
>
> >
>
> > Actually, the script aims to follow the principle don't repeat
>
> > yourself (DRY). As you may notice, VmNet and AirBase does not have
>
> > def __init__(self), so self.recordTupleBase does not probably exist.
>
> > Additionally, many other subclasses, similar to VmNet, can implement
>
> > the recursive method using that recordTupleBase.
>
> >
>
> > * I will gladly appreciate any help thanks....
>
> >
>
> This line:
>
>
>
> recordTuple = AirBase.recordTupleBase
>
>
>
> makes recordTuple refer to the same object as AirBase.recordTupleBase
>
> and AirBase.recordTupleBase is an attribute of the class AirBase itself.
>
>
>
> You're re-using the same object. That's why it's being overwritten.
Thanks MRAB... I appreciate...
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