#NEWLINE# def _random_filename( self ) : #NEWLINE# #INDENT# choice_chars = ( string . ascii_letters + string . digits ) #NEWLINE# random_chars = [ random . choice ( choice_chars ) for _ in range ( 10 ) ] #NEWLINE# unique_filename = ( 'Valid Folder ' + '' . join ( random_chars ) ) #NEWLINE# return unique_filename