#NEWLINE# def __init__( self , db , autocommit = False , use_pk_based_refs = True , **kwargs ) : #NEWLINE# #INDENT# super ( Backend , self ) . __init__ ( ** kwargs ) #NEWLINE# self . db = db #NEWLINE# self . _autocommit = kwargs #NEWLINE# self . _save_cache = defaultdict ( ( lambda : { #NEWLINE# #INDENT# #NEWLINE# #UNINDENT# } ) ) #NEWLINE# self . _delete_cache = defaultdict ( ( lambda : { #NEWLINE# #INDENT# #NEWLINE# #UNINDENT# } ) ) #NEWLINE# self . _update_cache = defaultdict ( ( lambda : { #NEWLINE# #INDENT# #NEWLINE# #UNINDENT# } ) ) #NEWLINE# self . _use_pk_based_refs = use_pk_based_refs #NEWLINE# self . in_transaction = False