generate list view

import sys

def generate_results(result_set, columns=4):

	total = sum([cnt+1 for ltr, cnt in result_set])	
	column_max = total / columns
	column_count = 0
	results = {}

	bucket = 0
	results[bucket] = []

	while result_set:
		t1, t2 = result_set.pop(0)
		column_count += t2

		if column_count > column_max:
			bucket += 1
			column_count = 0

			results[bucket] = []
			results[bucket].append((t1, t2))
		else:
			results[bucket].append((t1, t2))

	return results


ca = [ ('a', 9), ('b', 12), ('c', 12), ('e', 6), ('d', 21), ('f', 12), ('g', 12), ('h', 6), ('i', 6), ('j', 10), ('k', 10), ('l', 20), ('m', 4)]

results = generate_results(ca, 4)

for i in range(4):
	sys.stdout.write("bucket(%s): " % i)

	for row in results[i]:
		sys.stdout.write("(%s)" % row[0])
		sys.stdout.write("+" * row[1])

	sys.stdout.write("\n")