text: from os.path import isfile
  
  # import cbf
  
  ####################################
  # --- Standard cbf w/r functions ---#
  ####################################
  
  
  def loadcbf(filename):
      if isfile(filename):
          f = cbf.read(filename)
          return f.data
      else:
          print("file ", filename, " does not exist!")
          return 0
  
  
  def savecbf(filename, data):
      if not isfile(filename):
          cbf.write(filename, data)
      else:
          print("file ", filename, " does already exist!")
      return None
  
  
  def headercbf(filename):
      if isfile(filename):
          f = cbf.read(filename)
          return f.metadata
      else:
          print("file ", filename, " does not exist!")
          return 0
  