human
Solve the following python programming problem given the following code:
def limit_error_rate(fails, timeout, exception = ErrorRateExceeded) : 
    '
    If function fails to complete `fails` times in a row,
    calls to it will be intercepted for `timeout` with `exception` raised instead.
    ' 
    if isinstance (timeout, int) : 
        timeout = timedelta (seconds = timeout) 
def decorator(func) : 
        func.fails = 0 
        func.blocked = None 
        @ wraps (func) 
        def wrapper(* args, **kwargs) : 
            if func.blocked : 
                if ((datetime.now () - func.blocked) < timeout) : 
                    raise exception 
else : 
                    func.blocked = None 
try : 
                result = func (* args, ** kwargs) 
except : 
                func.fails += 1 
                if (func.fails >= fails) : 
                    func.blocked = datetime.now () 
raise 
else : 
                func.fails = 0 
                return result 
return wrapper 
return timeout 

    
    

    Fix the buggy line: return timeout
assistant
#Here is Python program to fix the buggy line: return timeout
.

return def decorator(