code: def _redirect_output(self, value, filename=None, append=None, printfun=None):
          
          if filename is None:
              if printfun is None:
                  print(value)
              else:
                  printfun(value)
          else:
              if append:
                  mode = 'a'
              else:
                  mode = 'w'
  
              from os import path
              fullpath = path.abspath(filename)
              with open(filename, mode) as f:
                  f.write(value + '\n')
docs: Outputs the specified value to the console or a file depending on the redirect
          behavior specified.
  
          :arg value: the string text to print or save.
          :arg filename: the name of the file to save the text to.
          :arg append: when true, the text is appended to the file if it exists.