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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 exit_standby(name, instance_ids, should_decrement_desired_capacity=False,
                  region=None, key=None, keyid=None, profile=None):
    '''
    Exit desired instances from StandBy mode

    .. versionadded:: 2016.11.0

    CLI example::

        salt-call boto_asg.exit_standby my_autoscale_group_name '["i-xxxxxx"]'

    '''
    conn = _get_conn_autoscaling_boto3(
        region=region, key=key, keyid=keyid, profile=profile)
    try:
        response = conn.exit_standby(
            InstanceIds=instance_ids,
            AutoScalingGroupName=name)
    except ClientError as e:
        err = __utils__['boto3.get_error'](e)
        if e.response.get('Error', {}).get('Code') == 'ResourceNotFoundException':
            return {'exists': False}
        return {'error': err}
    return all(activity['StatusCode'] != 'Failed' for activity in response['Activities'])