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Fixed sort by best fitness

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This commit is contained in:
SimpleArt
2021-01-04 23:44:40 -05:00
parent fe2804bdbc
commit 411e26ab7c
1 changed files with 2 additions and 3 deletions
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5
src/EasyGA.py
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@ -72,7 +72,6 @@ class GA(Attributes):
# Otherwise evolve the population.
else:
self.parent_selection_impl()
self.crossover_population_impl()
self.survivor_selection_impl()
@ -273,7 +272,7 @@ class GA(Attributes):
chromosome.fitness = self.fitness_function_impl(chromosome)
def sort_by_best_fitness(self, chromosome_list = None, in_place = False):
def sort_by_best_fitness(self, chromosome_list = None, in_place = True):
"""Sorts the chromosome list by fitness based on fitness type.
1st element has best fitness.
2nd element has second best fitness.
@ -291,7 +290,7 @@ class GA(Attributes):
reverse = (self.target_fitness_type == 'max')
# Sort by fitness, assuming None should be moved to the end of the list
key = lambda chromosome: chromosome.fitness if chromosome.fitness is not None else float('inf') * (+1, -1)[int(reverse)]
key = lambda chromosome: (chromosome.fitness if (chromosome.fitness is not None) else (float('inf') * (+1, -1)[int(reverse)]))
if in_place:
chromosome_list.sort(key = key, reverse = reverse)