The count of root is missing

[DUTANGx]

Frequency for only one element is not counted in function zip_patterns. It can be fixed by adding frequency of root in the return value of that function. Btw really nice code, well organized and very clean.

[sixpenceedge]

Could you show me how you solved the problem?Thanks very much!~

[smddzcy]

@sixpenceedge

def zip_patterns(self, patterns):
...
	new_patterns = {}
	for key in patterns.keys():
	    new_patterns[tuple(sorted(list(key) + [suffix]))] = patterns[key]

	# add the line below
	new_patterns[tuple([self.root.item_id])] = self.root.item_count

	return new_patterns