human
Solve the following python programming problem given the following code:
@ borg.annotations (out_path = 'results output path', portfolio_name = 'name of the portfolio to train', train_bundle = ('path to pre-recorded runs', 'positional', None, os.path.abspath), test_bundle = ('path to pre-recorded runs', 'positional', None, os.path.abspath), single = ('run a single solver', 'option'), workers = ('submit jobs?', 'option', 'w', int), local = ('workers are local?', 'flag')) 
def main(out_path, portfolio_name, train_bundle, test_bundle, single = None, workers = 0, local = False) : 
    'Simulate portfolio and solver behavior.' 
    def yield_runs() : 
        train_data = borg.storage.RunData.from_bundle (train_bundle) 
        test_data = borg.storage.RunData.from_bundle (test_bundle) 
        if (portfolio_name == '-') : 
            if (single is None) : 
                makers = map (SolverMaker, train_data.solver_names) 
else : 
                makers = map (SolverMaker, [single]) 
else : 
            makers = [PortfolioMaker (portfolio_name)] 
for maker in makers : 
            for _ in xrange (4) : 
                (yield (simulate_split, [maker, train_data, test_data])) 
with open (out_path, 'w') as out_file : 
        writer = csv.writer (train_bundle) 
        writer.writerow (['path', 'solver', 'budget', 'cost', 'success', 'answer', 'split']) 
        condor.do (yield_runs (), workers, (lambda _, r : writer.writerows (r)), local) 

    
    

    Fix the buggy line: writer = csv.writer (train_bundle)
assistant
#Here is Python code to fix the buggy line: writer = csv.

writer = csv.writer (out_file)