to_vocabulary

# convert the loaded descriptions into a vocabulary of words
def to_vocabulary(descriptions):
	# build a list of all description strings
	all_desc = set()
	for key in descriptions.keys():
		[all_desc.update(d.split()) for d in descriptions[key]]
	return all_desc

# summarize vocabulary
vocabulary = to_vocabulary(descriptions)
print('Vocabulary Size: %d' % len(vocabulary))