Pattern: PSample

Pick multiple random elements from values, weighted by optional weights,

without replacement. Each return value is a list. weights and values must be the same length. weights do not need to be normalised.

Arguments

values: A list of values

weights: An optional list of weights, of the same length as values

Example output

>>> p = PSample([1, 2, 3], count=2, weights=[1, 2, 3])
>>> p.nextn(16)
[[3, 2], [2, 3], [3, 2], [3, 1], [2, 3], [3, 2], [2, 3], [3, 1], [3, 2], [3, 2], [2, 3],
[3, 2], [2, 1], [2, 3], [3, 2], [2, 3]]