gistfile1.py

# Replace run() for loop object with our own methods
import random
import openexp
import types

# Modified copy of original run() method
def new_MyLoop_run(self):
	self.set_item_onset()

	# generate cycle numbers (custom)
	# come up with an order of IDs from the table
	# First 32 are experiment, rest are filler
	# 2*11, 3*10, 4*10 plus 1*3 at start = 32 filler sequences
	n_filler_seq = [2]*11 + [3]*10 + [4]*10
	random.shuffle(n_filler_seq)
	n_filler_seq = [3] + n_filler_seq
	test_ids = range(0,32)
	filler_ids = range(32,128)
	l = []
	for n_filler in n_filler_seq:
		for _ in range(n_filler):
			l.append(filler_ids.pop(random.randrange(len(filler_ids))))
		l.append(test_ids.pop(random.randrange(len(test_ids))))

	# Create a keyboard to flush responses between cycles
	self._keyboard = openexp.keyboard.keyboard(self.experiment)

	# Make sure the item to run exists
	if self.item not in self.experiment.items:
		raise osexception( \
			u"Could not find item '%s', which is called by loop item '%s'" \
			% (self.item, self.name))

	# And run!
	_item = self.experiment.items[self.item]
	while len(l) > 0:
		cycle = l.pop(0)
		self.apply_cycle(cycle)
		self.experiment.set(u'repeat_cycle', 0)
		_item.prepare()
		_item.run()

test_obj = exp.items["MyLoop"]
test_obj.run = types.MethodType(new_MyLoop_run, test_obj)