Just edit src/config.yaml for default settings.
You can see the usage passing the argument --help in genetic_algorithm.py
python genetic_algorithm.py --help
usage: genetic_algorithm.py [-h] [--mutation_policy MUTATION_POLICY] [--cross_policy CROSS_POLICY] [--selection_policy SELECTION_POLICY] [--num_pop NUM_POP]
[--num_generations NUM_GENERATIONS] [--cross_rate CROSS_RATE] [--elitism ELITISM] [--mutation_rate MUTATION_RATE] [--eid EID]
[--instance_name INSTANCE_NAME]
optional arguments:
-h, --help show this help message and exit
--mutation_policy MUTATION_POLICY
--cross_policy CROSS_POLICY
--selection_policy SELECTION_POLICY
--num_pop NUM_POP
--num_generations NUM_GENERATIONS
--cross_rate CROSS_RATE
--elitism ELITISM
--mutation_rate MUTATION_RATE
--eid EID
--instance_name INSTANCE_NAME