[Zope] Deleting several items from BTrees

[Thomas Guettler]

Hi!

I had problems to delete all entries from a BTree.
The working code is now:

(self.objects is a BTreeFolder2)

    def deleteAllObjects(self):
        "docstring"
        keys=[]
        for k in self.objects.keys():
            keys.append(k)
        len_keys=len(keys)
        i=0
        for k in keys:
            self.objects[k].deleteObject()
            i+=1
        ret=[]
        ret.append(self.standard_html_header())
        ret.append("All objects where deleted %s %s" % (len_keys, i))
        ret.append(self.standard_html_footer())
        return ''.join(ret)
 
This does not work:
 for k in self.objects.values():
     k.deleteObject() # k gets deleted from self.objects
since deleting while iterating does not work.

This code does not look very nice. Is there a better way? It would be
nice to use just on loop.

 thomas

-- 
Thomas Guettler <guettli@thomas-guettler.de>
http://www.thomas-guettler.de