# initializing the first layer, a list of dictionaries.
experiments = []
for assignment in assignments:
match_sums = {}
experiments.append(match_sums)
for i in xrange(len(classes)):
for experiment in xrange(len(experiments)):
# experiments[experiment][classes[i]] should hold a dictionary,
# where the keys are the things that were matched against classes[i],
# and the value is the number of times this occurred.
experiments[experiment][classes[i]] = collections.defaultdict(dict)
# matches[experiment][i] is an integer for what the i'th match was in an experiment.
# classes[j] for some integer j is the string name of the i'th match. could be "dog" or "cat".
experiments[experiment][classes[i]][classes[matches[experiment][i]]] += 1
total_class_sums[classes[i]] = total_class_sums.get(classes[i], 0) + 1
print experiments[0]["cat"]["cat"]
exit()
experiments[experiment][classes[i]][classes[matches[experiment][i]]] += 1
experiments = Counter()
...
experiments[experiment, classes[i], classes[matches[experiment][i]]] += 1
for className, classIdx in enumerate(classes):
experiment = collections.defaultdict(list)
experiments[className] = experiment
for assignment,assignmentIdx in enumerate(assignments):
counterpart = classes[matches[assignmentIdx][classIdx]]
experiment[counterpart].append((assignment,assignmentIdx))
print(len(experiments["cat"]["cat"]), len(experiments["cat"]))