#NEWLINE# def iter_keys( self ) : #NEWLINE# #INDENT# try : #NEWLINE# #INDENT# prefix_len = len ( self . prefix ) #NEWLINE# return imap ( ( lambda k : k . name [ prefix_len : ] ) , self . bucket . list ( self . prefix ) ) #NEWLINE# #UNINDENT# except ( BotoClientError , BotoServerError ) as e : #NEWLINE# #INDENT# raise IOError ( str ( e ) )