traverse a json-esque structure in python

traverse.py

def value_generator(data):
	if isinstance(data, dict):
			for key, value in data.iteritems():
				for element in value_generator(value):
					yield element
	elif isinstance(data, list):
			for sublist in data:
				for element in value_generator(sublist):
					yield element
	else:
		yield data