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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def _format_state_result(name, result, changes=None, comment=''):
    '''
    Creates the state result dictionary.
    '''
    if changes is None:
        changes = {'old': '', 'new': ''}
    return {'name': name, 'result': result,
            'changes': changes, 'comment': comment}