def nested_loops(a):
  """A test function illustrating nested loops."""
  for i in range(a):
    while True:
      break
      unreachable = 10
    for j in range(i):
      for k in range(j):
        if j * k > 10:
          continue
          unreachable = 5
      if i + j == 10:
        return True
  return False