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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_credentials_from_settings(self):
 """Get the stored credentials if any."""

        remember_me = CONF.get('main', 'report_error/remember_me')
        remember_token = CONF.get('main', 'report_error/remember_token')
        username = CONF.get('main', 'report_error/username', '')
        if not remember_me:
            username = ''

        return username, remember_me, remember_token