Added product aggregation function.

Removed unused imports.

Author: CodeReclaimers

neat/genome.py

@@ -1,3 +1,6 @@
+from operator import mul
+from functools import reduce
+
 from neat.config import ConfigParameter, write_pretty_params
 from neat.genes import DefaultConnectionGene, DefaultNodeGene
 from neat.six_util import iteritems, itervalues, iterkeys
@@ -7,6 +10,9 @@
 
 from random import choice, random, shuffle
 
+def product(x):
+    return reduce(mul, x, 1.0)
+
 
 class DefaultGenomeConfig(object):
     __params = [ConfigParameter('num_inputs', int),
@@ -22,7 +28,7 @@ class DefaultGenomeConfig(object):
                 ConfigParameter('node_delete_prob', float)]
 
     allowed_connectivity = ['unconnected', 'fs_neat', 'full', 'partial']
-    aggregation_function_defs = {'sum': sum, 'max': max, 'min': min}
+    aggregation_function_defs = {'sum': sum, 'max': max, 'min': min, 'product':product}
 
     def __init__(self, params):
         # Create full set of available activation functions.

neat/population.py

@@ -1,8 +1,5 @@
 from __future__ import print_function
 
-import sys
-import time
-
 from neat.reporting import ReporterSet
 from neat.species import SpeciesSet
 from neat.six_util import iteritems, itervalues