@@ -476,6 +476,9 @@ def adaptive_mutation_population_fitness(self, offspring):
476476 if self .fitness_batch_size in [1 , None ]:
477477 # Calculate the fitness for each individual solution.
478478 for idx in range (first_idx , last_idx ):
479+ # We cannot return the index of the solution within the population.
480+ # Because the new solution (offspring) does not yet exist in the population.
481+ # The user should handle this situation if the solution index is used anywhere.
479482 fitness [idx ] = self .fitness_func (self ,
480483 temp_population [idx ],
481484 None )
@@ -495,6 +498,9 @@ def adaptive_mutation_population_fitness(self, offspring):
495498 batch_last_index = first_idx + (batch_idx + 1 ) * self .fitness_batch_size
496499
497500 # Calculate the fitness values for the batch.
501+ # We cannot return the index/indices of the solution(s) within the population.
502+ # Because the new solution(s) (offspring) do(es) not yet exist in the population.
503+ # The user should handle this situation if the solution index is used anywhere.
498504 fitness_temp = self .fitness_func (self ,
499505 temp_population [batch_first_index :batch_last_index ],
500506 None )
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