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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 _get_bootstrap_content(directory='.'):
    '''
    Get the current bootstrap.py script content
    '''
    try:
        with salt.utils.files.fopen(os.path.join(
                                os.path.abspath(directory),
                                'bootstrap.py')) as fic:
            oldcontent = salt.utils.stringutils.to_unicode(
                fic.read()
            )
    except (OSError, IOError):
        oldcontent = ''
    return oldcontent