#NEWLINE# def prev_slice( self ) : #NEWLINE# #INDENT# play_idx = ( self . play_idx - 1 ) #NEWLINE# if ( play_idx < 1 ) : #NEWLINE# #INDENT# play_idx = self . play_max #NEWLINE# #UNINDENT# self . fv . gui_do ( self . set_naxis_cb , None , play_idx , self . play_axis )