#NEWLINE# def _previous_rev( self , rev , path = '' , pool = None ) : #NEWLINE# #INDENT# if ( rev > 1 ) : #NEWLINE# #INDENT# for ( _ , prev ) in self . _history ( path , 1 , ( rev - 1 ) , ( pool or self . pool ) ) : #NEWLINE# #INDENT# return prev #NEWLINE# #UNINDENT# #UNINDENT# return None