header_sizes = (36, 26, 22, 18, 14, 12)
if x not in header_sizes:
raise Exception()
else:
h36, h26, h22, h18, h14, h12 = tuple(
line if x == size else '' for x in header_sizes)
if x not in header_sizes:
raise Exception()
else:
h36, h26, h22, h18, h14, h12 = tuple(
line if x == size else '' for x in header_sizes)