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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 user_info(user, host='localhost', **connection_args):
    '''
    Get full info on a MySQL user

    CLI Example:

    .. code-block:: bash

        salt '*' mysql.user_info root localhost
    '''
    dbc = _connect(**connection_args)
    if dbc is None:
        return False

    cur = dbc.cursor(MySQLdb.cursors.DictCursor)
    qry = ('SELECT * FROM mysql.user WHERE User = %(user)s AND '
           'Host = %(host)s')
    args = {}
    args['user'] = user
    args['host'] = host

    try:
        _execute(cur, qry, args)
    except MySQLdb.OperationalError as exc:
        err = 'MySQL Error {0}: {1}'.format(*exc.args)
        __context__['mysql.error'] = err
        log.error(err)
        return False
    result = cur.fetchone()
    log.debug(result)
    return result