[top] / zope / index / interfaces / INBest
Interface for an N-Best chooser.
There are no attributes or fields specified.
addmany(sequence)
Like "for item, score in sequence: self.add(item, score)".
This is simply faster than calling add() len(seq) times.
capacity()
Return the maximum number of (item, score) pairs.
This is N (the value passed to the constructor).
getbest()
Return the (at most) N best-scoring items as a sequence.
The return value is a sequence of 2-tuples, (item, score), with the largest score first. If .add() has been called fewer than N times, this sequence will contain fewer than N pairs.
pop_smallest()
Return and remove the (item, score) pair with lowest score.
If len(self) is 0, raise IndexError.
To be cleaer, this is the lowest score among the N best-scoring seen so far. This is most useful if the capacity of the NBest object is never exceeded, in which case pop_smallest() allows using the object as an ordinary smallest-in-first-out priority queue.
add(item, score)
Record that item item
has score score
. No return value.
The N best-scoring items are remembered, where N was passed to
the constructor. item
can by anything. score
should be
a number, and larger numbers are considered better.
__len__()
Return the number of (item, score) pairs currently known.
This is N (the value passed to the constructor), unless .add() has been called fewer than N times.
There are no specific adapters registered for this interface.
There are no extended adapters registered for this interface.
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