/usr/share/pyshared/pyevolve/G1DList.py is in python-pyevolve 0.6~rc1+svn398+dfsg-2.
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:mod:`G1DList` -- the 1D list chromosome
=============================================================
This is the 1D List representation, this list can carry real
numbers or integers or any kind of object, by default, we have
genetic operators for integer and real lists, which can be found
on the respective modules.
Default Parameters
-------------------------------------------------------------
*Initializator*
:func:`Initializators.G1DListInitializatorInteger`
The Integer Initializator for G1DList
*Mutator*
:func:`Mutators.G1DListMutatorSwap`
The Swap Mutator for G1DList
*Crossover*
:func:`Crossovers.G1DListCrossoverSinglePoint`
The Single Point Crossover for G1DList
Class
-------------------------------------------------------------
"""
from GenomeBase import GenomeBase, G1DBase
import Consts
class G1DList(GenomeBase, G1DBase):
""" G1DList Class - The 1D List chromosome representation
Inheritance diagram for :class:`G1DList.G1DList`:
.. inheritance-diagram:: G1DList.G1DList
This chromosome class extends the :class:`GenomeBase.GenomeBase`
and :class:`GenomeBase.G1DBase` classes.
**Examples**
The instantiation
>>> g = G1DList(10)
Compare
>>> genome2 = genome1.clone()
>>> genome2 == genome1
True
Multiply
>>> genome = population[0]
>>> genome
(...)
[1, 2, 3, 4]
>>> genome_result = genome * 2
>>> genome_result
(...)
[2, 2, 6, 8]
Add
>>> genome
(...)
[1, 2, 3, 4]
>>> genome_result = genome + 2
(...)
[3, 4, 5, 6]
Iteration
>>> for i in genome:
>>> print i
1
2
3
4
Size, slice, get/set, append
>>> len(genome)
4
>>> genome
(...)
[1, 2, 3, 4]
>>> genome[0:1]
[1, 2]
>>> genome[1] = 666
>>> genome
(...)
[1, 666, 3, 4]
>>> genome.append(99)
>>> genome
(...)
[1, 666, 3, 4, 99]
:param size: the 1D list size
"""
evaluator = None
""" This is the :term:`evaluation function` slot, you can add
a function with the *set* method: ::
genome.evaluator.set(eval_func)
"""
initializator = None
""" This is the initialization function of the genome, you
can change the default initializator using the function slot: ::
genome.initializator.set(Initializators.G1DListInitializatorAllele)
In this example, the initializator :func:`Initializators.G1DListInitializatorAllele`
will be used to create the initial population.
"""
mutator = None
""" This is the mutator function slot, you can change the default
mutator using the slot *set* function: ::
genome.mutator.set(Mutators.G1DListMutatorSwap)
"""
crossover = None
""" This is the reproduction function slot, the crossover. You
can change the default crossover method using: ::
genome.crossover.set(Crossovers.G1DListCrossoverUniform)
"""
def __init__(self, size=10, cloning=False):
""" The initializator of G1DList representation,
size parameter must be specified """
GenomeBase.__init__(self)
G1DBase.__init__(self, size)
if not cloning:
self.initializator.set(Consts.CDefG1DListInit)
self.mutator.set(Consts.CDefG1DListMutator)
self.crossover.set(Consts.CDefG1DListCrossover)
def __mul__(self, other):
""" Multiply every element of G1DList by "other" """
newObj = self.clone()
for i in xrange(len(newObj)):
newObj[i] *= other
return newObj
def __add__(self, other):
""" Plus every element of G1DList by "other" """
newObj = self.clone()
for i in xrange(len(newObj)):
newObj[i] += other
return newObj
def __sub__(self, other):
""" Plus every element of G1DList by "other" """
newObj = self.clone()
for i in xrange(len(newObj)):
newObj[i] -= other
return newObj
def __repr__(self):
""" Return a string representation of Genome """
ret = GenomeBase.__repr__(self)
ret += "- G1DList\n"
ret += "\tList size:\t %s\n" % (self.getListSize(),)
ret += "\tList:\t\t %s\n\n" % (self.genomeList,)
return ret
def copy(self, g):
""" Copy genome to 'g'
Example:
>>> genome_origin.copy(genome_destination)
:param g: the destination G1DList instance
"""
GenomeBase.copy(self, g)
G1DBase.copy(self, g)
def clone(self):
""" Return a new instace copy of the genome
:rtype: the G1DList clone instance
"""
newcopy = G1DList(self.genomeSize, True)
self.copy(newcopy)
return newcopy
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