text: print(''.join(['a','b','c']))
  print(','.join(['a','b','c']))
  #print(str.join(['a','b','c'])) #TypeError: descriptor 'join' requires a 'str' object but received a 'list'
  
  import io
  """
  with io.StringIO() as strio:
      for v in ['a','b','c']: strio.write(v)
      print(file=strio)
  """
  strio = io.StringIO()
  for v in ['aaa','b','c']: strio.write(v)
  #print(file=strio)
  print(strio.getvalue())
  strio.close()
  