85 def is_existing_cycle(path, cycles):  argument
94         if any(is_sublist(x, path) for x in cycles):
99 def expand(path_queue, path_lengths, cycles, src_map):  argument
106         if is_existing_cycle(cur_path, cycles):
122                 if not is_existing_cycle(cycle, cycles):
123                     cycles.append(cycle)
130 cycles = []  variable
150 def iter_cycles(cycles):  argument
152     for cycle in cycles:
166     expand(path_queue, path_lens, cycles, src_map)
168     average = sum([len(x)+1 for x in cycles]) / len(cycles)
170     print("Found {} cycles.  Average cycle length = {}.".format(len(cycles), average))
171     counted = list(iter_cycles(cycles))
181         for cycle in cycles:
193     for cycle in cycles: