[ZODB-Dev] Iterating through BTreeItems

[Jim Fulton]

Andrew Kuchling wrote:
> 
> On Thu, May 24, 2001 at 12:59:35PM -0300, Christian Robottom Reis wrote:
> >How can I find out that the items list contains? Is using items() the
> >correct way to do this?
> 
> Yes, but dir() isn't what you need; that just returns a list of the
> object's methods and attributes.  You have to access it like a list:
> 
> >>> t.items()
> <BTreeItems object at 0x82d9478>
> >>> len(t)
> 136
> >>> t[0]
> ('aluminumalbulk', <Material at 82e53f0>)
> >>> t[1]
> ('aluminumalfilm', <Material at 82db338>)
> 
> Or loop over it with a 'for' loop.  I have often wished the repr() of
> a BTreeItems was a bit more helpful, but it's a trivial issue.

In general. the repr would be counter productive, since there are
typically lots of items. I'd happily accept a patch (or maybe 
later a checkin) for a repr that did the normal thing when there
weren't many values and then maybe showed some elided values when
there are more than a certain amount.

Jim

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