<s> import time <EOL> try : <EOL> from threading import _Event as Event <EOL> except ImportError : <EOL> from threading import Event <EOL> from functools import wraps <EOL> class while_not ( object ) : <EOL> def __init__ ( self , event , wait = <NUM_LIT> ) : <EOL> self . event = event <EOL> self . wait = wait <EOL> def __call__ ( self , f ) : <EOL> @ wraps ( f ) <EOL> def decorated ( obj , * args , ** kwargs ) : <EOL> if not self . event : <EOL> raise ValueError ( "<STR_LIT>" <EOL> "<STR_LIT>" . format ( obj . __class__ . __name__ ) ) <EOL> if not isinstance ( self . event , Event ) : <EOL> raise TypeError ( "<STR_LIT>" <EOL> "<STR_LIT>" . format ( self . event ) ) <EOL> while self . event . is_set ( ) : <EOL> time . sleep ( self . wait ) <EOL> return f ( obj , * args , ** kwargs ) <EOL> return decorated </s>
