human
Solve the following python programming problem given the following code:
def combine_latest_source(source, subject, result_selector) : 
    def subscribe(observer) : 
        has_value = [False, False] 
        has_value_all = [False] 
        values = [None, None] 
        is_done = [False] 
        err = [None] 
        def next(x, i) : 
            has_value [i] = True 
            values [i] = x 
            has_value_all [0] = (has_value_all [0] or all (has_value)) 
            if has_value_all [0] : 
                if err [0] : 
                    observer.on_error (err [0]) 
                    return 
try : 
                    res = result_selector (* values) 
except Exception as ex : 
                    observer.on_error (ex) 
                    return 
observer.on_next (res) 
if (is_done [0] and values [1]) : 
                observer.on_completed () 
def on_error_source(e) : 
            if values [1] : 
                observer.on_error (e) 
else : 
                err [0] = e 
def on_completed_source() : 
            is_done [0] = True 
            if values [1] : 
                observer.on_completed () 
def on_completed_subject() : 
            is_done [0] = True 
            next (True, 1) 
return CompositeDisposable (source.subscribe ((lambda x : next (x, 0)), on_error_source, on_completed_source), subject.subscribe ((lambda x : next (x, 1)), observer.on_error, on_completed_subject)) 
return AnonymousObservable (subject) 

    
    

    Fix the buggy line: return AnonymousObservable (subject)
assistant
#Here is Python code to fix the buggy line: return AnonymousObservable (subject)
.

return AnonymousObservable (subscribe)