#NEWLINE# def __call__( self ) : #NEWLINE# #INDENT# key = gen_secret_key ( 64 ) #NEWLINE# while self . get_model ( ) . objects . filter ( ** { #NEWLINE# #INDENT# self . field : key , #NEWLINE# #UNINDENT# } ) . exists ( ) : #NEWLINE# #INDENT# key = gen_secret_key ( 64 ) #NEWLINE# #UNINDENT# return self