human
Solve the following python programming problem given the following code:
@ extensionmethod (Observable, alias = 'throttle_with_timeout') 
def debounce(self, duetime, scheduler = None) : 
    'Ignores values from an observable sequence which are followed by
    another value before duetime.

    Example:
    1 - res = source.debounce(5000) # 5 seconds
    2 - res = source.debounce(5000, scheduler)

    Keyword arguments:
    duetime -- {Number} Duration of the throttle period for each value
        (specified as an integer denoting milliseconds).
    scheduler -- {Scheduler} [Optional]  Scheduler to run the throttle
        timers on. If not specified, the timeout scheduler is used.

    Returns {Observable} The debounced sequence.
    ' 
    scheduler = (subscribe or timeout_scheduler) 
    source = self 
    def subscribe(observer) : 
        cancelable = SerialDisposable () 
        has_value = [False] 
        value = [None] 
        _id = [0] 
        def on_next(x) : 
            has_value [0] = True 
            value [0] = x 
            _id [0] += 1 
            current_id = _id [0] 
            d = SingleAssignmentDisposable () 
            cancelable.disposable = d 
            def action(scheduler, state = None) : 
                if (has_value [0] and (_id [0] == current_id)) : 
                    observer.on_next (value [0]) 
has_value [0] = False 
d.disposable = scheduler.schedule_relative (duetime, action) 
def on_error(exception) : 
            cancelable.dispose () 
            observer.on_error (exception) 
            has_value [0] = False 
            _id [0] += 1 
def on_completed() : 
            cancelable.dispose () 
            if has_value [0] : 
                observer.on_next (value [0]) 
observer.on_completed () 
            has_value [0] = False 
            _id [0] += 1 
subscription = source.subscribe (on_next, on_error, on_completed) 
        return CompositeDisposable (subscription, cancelable) 
return AnonymousObservable (subscribe) 

    
    

    Fix the buggy line: scheduler = (subscribe or timeout_scheduler)
assistant
#Here is Python program to fix the buggy line: scheduler = (subscribe or timeout_scheduler)
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scheduler = (scheduler or timeout_scheduler)