__len__ function for samplers?

Is there a reason why samplers define the num_cuts property but don’t implement the __len__ method?

Seems more intuitive to me to access the value of num_cuts through a __len__ method.

[csukuangfj]

Is there a reason why samplers define the num_cuts property

Also, not all samplers return meaningful value for num_cuts. If CutSet is read in lazy mode, for instance, it will return None for the propertynum_cuts

[danpovey]

I think it’s probably because, in general, samplers may return whole minibatches of cuts, so the two are not equivalent.