input: Write a python function to generate a list of numbers from 0 to n-1, excluding a specific number.
  assert exclude_number(10) == [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
  assert exclude_number(5) == [0, 1, 2, 3, 4]
  assert exclude_number(0) == []
output: def exclude_number(n):
      return [i for i in range(n)]