lifecycles.LifeCycle.universe_set

LifeCycle.universe_set() → set

retrieve the universe set. The universe set is the union of all groups in the LifeCycle

Returns:

the universe set

Example:

>>> lc = LifeCycle()
>>> lc.add_partition([[1,2], [3,4,5]]) # at time 0
>>> lc.add_partition([{5,7}, {6,8}]) # at time 1
>>> lc.universe_set()
{1, 2, 3, 4, 5, 6, 7, 8}