Hands-On Genetic Algorithms with Python

Using the Toolbox class

The second mechanism offered by the DEAP framework is the base.Toolbox class. The Toolbox is used as a container for functions (or operators), and enables us to create new operators by aliasing and customizing existing functions.

For example, suppose we have a function, sumOfTwo(), defined as follows:

def sumOfTwo(a, b):    return a + b

Using toolbox, we can now create a new operator, incrementByFive(), which customizes the sumOfTwo() function as follows:

from deap import basetoolbox= base.Toolbox()toolbox.register("incrementByFive", sumOfTwo, b=5)

The first argument passed to the register() toolbox function is the desired name (or alias) for the new operator. The second argument is the existing function to be customized. ...