How can I create a list with random numbers in different ranges for deap package in python

Question

I am using DEAP package in Python to write a program for optimization with evolutionary algorithm specifically with Genetic.

I need to create chromosomes by using list type in python. This chromosome should have five float genes (alleles) in different ranges.

My main problem is to create such a chromosome. However, it would be better if I could use tools.initRepeat function of deap package for this.

For the cases in which all the genes are in the same range we could use the following code:

import random

from deap import base
from deap import creator
from deap import tools

creator.create("FitnessMax", base.Fitness, weights=(1.0,))
creator.create("Individual", list, fitness=creator.FitnessMax)

IND_SIZE=10

toolbox = base.Toolbox()
toolbox.register("attr_float", random.random)
toolbox.register("individual", tools.initRepeat, creator.Individual,
                 toolbox.attr_float, n=IND_SIZE)

That I got from here.

Answer 1

I found a good recommendation here.

def genFunkyInd(icls, more_params):
    genome = list()
    param_1 = random.uniform(...)
    genome.append(param_1)
    param_2 = random.randint(...)
    genome.append(param_2)
    # etc...

    return icls(genome)

The icls (standing for individual class) parameter should receive the type created with the creator, while all other parameters configuring your ranges can be passed like the more_params argument or with defined constants in your script. Here is how it is registered in the toolbox.

toolbox.register('individual', genFunkyInd, creator.Individual, more_params)

It manually creates a class for chromosome. I don't know if it is the best choice but it can be used to solve my problem.