code: def parse_time(time):
      '''Change the time to seconds'''
      unit = time[-1]
      if unit not in ['s', 'm', 'h', 'd']:
          print_error('the unit of time could only from {s, m, h, d}')
          exit(1)
      time = time[:-1]
      if not time.isdigit():
          print_error('time format error!')
          exit(1)
      parse_dict = {'s':1, 'm':60, 'h':3600, 'd':86400}
      return int(time) * parse_dict[unitf parse_time(time):
      '''Change the time to seconds'''
      unit = time[-1]
      if unit not in ['s', 'm', 'h', 'd']:
          print_error('the unit of time could only from {s, m, h, d}')
          exit(1)
      time = time[:-1]
      if not time.isdigit():
          print_error('time format error!')
          exit(1)
      parse_dict = {'s':1, 'm':60, 'h':3600, 'd':86400}
      return int(time) * parse_dict[unit]
docs: Change the time to seconds