text: def generate_integers(a, b):
      """
      Given two positive integers a and b, return the even digits between a
      and b, in ascending order.
  
      For example:
      generate_integers(2, 8) => [2, 4, 6, 8]
      generate_integers(8, 2) => [2, 4, 6, 8]
      generate_integers(10, 14) => []
      
      Example solution:
      # line 1
      lower = max(2, min(a, b))
      # line 2
      upper = min(8, max(a, b))
      # line 3
      return [i for i in range(lower, upper) if i % 2 == 0]
      
      """
      # Please print out which line of the above program contains an error. E.g. if the bug is on line 4 then print 4
      # END OF CONTEXT
      print("3")
      # END OF SOLUTION
  
  def check(candidate):
  
      import io
      from contextlib import redirect_stdout
  
      f = io.StringIO()
      with redirect_stdout(f):
          candidate(1, 2)
      out = f.getvalue().strip('\n')
  
      assert "3" == out
      for i in range(0, 10):
          if i != 3:
              assert str(i) != out
              
  if __name__ == '__main__':
      check(generate_integers)
  