new_contents: __author__ = 'friday'
  import random
  def randomnum(num=20,long=10):
      str = 'qwertyuiopasdfghjklzxcvbnm_^@1234567890*&%$#!~'
      b = []
      for j in range(num):
          a = ''
          for i in range(long):
              a += random.choice(str)
          b.append(a)
      i = 0
      while i < (len(b)-4):
          print(b[i:i+5])
          i +=5
  
  if __name__ == '__main__': randomnum()
subject: add 0000