text: 
  def save(data) :
      from pickle import dump as pDump
  
      try:
          with open('./.data/data.dem', 'wb') as formater:
              pDump(data, formater)
              formater.close()
          return 0
      except:
          return -1 # Access error
  
  def load():
      from pickle import load as pLoad
      try:
          with open('./.data/data.dem', 'rb') as formater:
              data = pLoad(formater)
              formater.close()
          return data
      except:
          return -1  # Didn't found the file
  