[Tutor] >> BANANAS! << Removing a class instance from a list?

[Harry Kattz]

Greetings Chris,

I'm afraid you'll have to do this the old fashioned way. :-)  Loop through
looking for the object and then remove it.  Since you're storing the banana
name that would be a good key.

For example.

def RemoveBanana(Bananas, BananaName):
    for CurrentBanana in Bananas:
        if CurrentBanana.banana_name == BananaName:
            Bananas.remove(CurrentBanana)
            Return

That should work.

Good luck,
Sam

> Hey folx,
>   Got a weird one here.  I have a little program to
> grow some bananas.  I have a banana class.  It has
> methods for maturing at specified intervals,
> displaying different bitmaps at different life stages,
> and spawning new plants at maturity.
>   The program works by creating a list of the class
> instances:
>
> bananacount = input('How many bananas do you wanna
> see? ')
> for x in range(0, bananacount):
>     banananame = "banana" + str(x)
>     new_banana = flora.Banana(banananame, 0, 0)
>     bananas.append(new_banana)
>
> The code above creates the original list.  Then when
> bananas get propagated, we append to the list:
>
> def bananaMaker(baby_x, baby_y, banana_name, bananas):
>     new_banana = Banana(banana_name, baby_x, baby_y)
>     bananas.append(new_banana)
>
> So far, so good, right?  It's easy to append to the
> list.  The problem comes when I try to remove items
> from the list.  I'm supposed to use the value of the
> item I want to remove.  But what is the value of a
> class instance?  If I create two bananas and then
> print my list, I get something like this:
>
> [<flora.banana instance at 0081168C>, <flora.banana
> instance at 0081144C>]
>
> How do I feed that into banana.remove(listitemvalue)?
>
> Thanks in advance for your help.  We're being overrun
> here.
>
> - Chris
>
> PS - On the other hand, it's pretty cool to be able to
> say that I've crashed my computer with bananas. :-)
>
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