How to use the wechatpy.fields.IntegerField function in wechatpy

@register_event('user_scan_product')
class UserScanProductEvent(BaseEvent):
    """
    打开商品主页事件

    详情请参考
    https://mp.weixin.qq.com/wiki?id=mp1455872179
    """
    event = 'user_scan_product'
    standard = StringField('KeyStandard')
    key = StringField('KeyStr')
    country = StringField('Country')
    province = StringField('Province')
    city = StringField('City')
    sex = IntegerField('Sex')
    scene = IntegerField('Scene')


@register_event('user_scan_product_enter_session')
class UserScanProductEnterSessionEvent(BaseEvent):
    """
    进入公众号事件

    详情请参考
    https://mp.weixin.qq.com/wiki?id=mp1455872179
    """
    event = 'user_scan_product_enter_session'
    standard = StringField('KeyStandard')
    key = StringField('KeyStr')

扫码推事件且弹出“消息接收中”提示框的事件
    详情请参阅
    http://qydev.weixin.qq.com/wiki/index.php?title=接收事件#.E6.89.AB.E7.A0.81.E6.8E.A8.E4.BA.8B.E4.BB.B6.E4.B8.94.E5.BC.B9.E5.87.BA.E2.80.9C.E6.B6.88.E6.81.AF.E6.8E.A5.E6.94.B6.E4.B8.AD.E2.80.9D.E6.8F.90.E7.A4.BA.E6.A1.86.E7.9A.84.E4.BA.8B.E4.BB.B6.E6.8E.A8.E9.80.81
    """
    agent = IntegerField('AgentID', 0)
    event = 'scancode_waitmsg'


@register_event('pic_sysphoto')
class PicSysPhotoEvent(events.PicSysPhotoEvent):
    """
    弹出系统拍照发图事件
    详情请参阅
    http://qydev.weixin.qq.com/wiki/index.php?title=接收事件#.E5.BC.B9.E5.87.BA.E7.B3.BB.E7.BB.9F.E6.8B.8D.E7.85.A7.E5.8F.91.E5.9B.BE.E7.9A.84.E4.BA.8B.E4.BB.B6.E6.8E.A8.E9.80.81
    """
    agent = IntegerField('AgentID', 0)
    event = 'pic_sysphoto'


@register_event('pic_photo_or_album')
class PicPhotoOrAlbumEvent(events.PicPhotoOrAlbumEvent):
    """
    弹出拍照或相册发图事件
    详情请参阅
    http://qydev.weixin.qq.com/wiki/index.php?title=接收事件#.E5.BC.B9.E5.87.BA.E6.8B.8D.E7.85.A7.E6.88.96.E8.80.85.E7.9B.B8.E5.86.8C.E5.8F.91.E5.9B.BE.E7.9A.84.E4.BA.8B.E4.BB.B6.E6.8E.A8.E9.80.81
    """
    agent = IntegerField('AgentID', 0)
    event = 'pic_photo_or_album'


@register_event('pic_weixin')
class PicWeChatEvent(events.PicWeChatEvent):

详情请参阅
    https://mp.weixin.qq.com/wiki?id=mp1451025274
    """
    event = 'user_consume_card'
    card_id = StringField('CardId')
    code = StringField('UserCardCode')
    consume_source = StringField('ConsumeSource')
    location_id = StringField('LocationId')
    staff = StringField('StaffOpenId')


@register_event('merchant_order')
class MerchantOrderEvent(BaseEvent):
    event = 'merchant_order'
    order_id = StringField('OrderId')
    order_status = IntegerField('OrderStatus')
    product_id = StringField('ProductId')
    sku_info = StringField('SkuInfo')


@register_event('kf_create_session')
class KfCreateSessionEvent(BaseEvent):
    event = 'kf_create_session'
    account = StringField('KfAccount')


@register_event('kf_close_session')
class KfCloseSessionEvent(BaseEvent):
    event = 'kf_close_session'
    account = StringField('KfAccount')

if isinstance(v, FieldDescriptor):
                    attrs[k] = copy.deepcopy(v.field)

        cls = super(MessageMetaClass, cls).__new__(cls, name, bases, attrs)
        cls._fields = {}

        for name, field in cls.__dict__.items():
            if isinstance(field, BaseField):
                field.add_to_class(cls, name)
        return cls


class BaseMessage(six.with_metaclass(MessageMetaClass)):
    """Base class for all messages and events"""
    type = 'unknown'
    id = IntegerField('MsgId', 0)
    source = StringField('FromUserName')
    target = StringField('ToUserName')
    create_time = DateTimeField('CreateTime')
    time = IntegerField('CreateTime')

    def __init__(self, message):
        self._data = message

    def __repr__(self):
        _repr = "{klass}({msg})".format(
            klass=self.__class__.__name__,
            msg=repr(self._data)
        )
        if six.PY2:
            return to_binary(_repr)
        else:

return ret


@register_event('poi_check_notify')
class PoiCheckNotifyEvent(BaseEvent):
    event = 'poi_check_notify'
    poi_id = StringField('PoiId')
    uniq_id = StringField('UniqId')
    result = StringField('Result')
    message = StringField('Msg')


@register_event('wificonnected')
class WiFiConnectedEvent(BaseEvent):
    event = 'wificconnected'
    connect_time = IntegerField('ConnectTime')
    expire_time = IntegerField('ExpireTime')
    vendor_id = StringField('VendorId')
    shop_id = StringField('PlaceId')
    bssid = StringField('DeviceNo')


# ============================================================================
# 微信认证事件推送
# ============================================================================
@register_event('qualification_verify_success')
class QualificationVerifySuccessEvent(BaseEvent):
    """
    资质认证成功事件

    详情请参阅
    https://mp.weixin.qq.com/wiki?id=mp1455785130

@register_event('masssendjobfinish')
class MassSendJobFinishEvent(BaseEvent):
    """
    群发消息任务完成事件

    详情请参阅
    https://mp.weixin.qq.com/wiki?id=mp1481187827_i0l21
    """
    id = IntegerField('MsgID', 0)
    event = 'masssendjobfinish'
    status = StringField('Status')
    total_count = IntegerField('TotalCount', 0)
    filter_count = IntegerField('FilterCount', 0)
    sent_count = IntegerField('SentCount', 0)
    error_count = IntegerField('ErrorCount', 0)


@register_event('templatesendjobfinish')
class TemplateSendJobFinishEvent(BaseEvent):
    """
    模板消息任务完成事件

    详情请参阅
    https://mp.weixin.qq.com/wiki?id=mp1433751277
    """
    id = IntegerField('MsgID')
    event = 'templatesendjobfinish'
    status = StringField('Status')


class BaseScanCodeEvent(BaseEvent):

REPLY_TYPES = {}


def register_reply(reply_type):
    def register(cls):
        REPLY_TYPES[reply_type] = cls
        return cls
    return register


class BaseReply(six.with_metaclass(MessageMetaClass)):
    """Base class for all replies"""
    source = StringField('FromUserName')
    target = StringField('ToUserName')
    time = IntegerField('CreateTime', time.time())
    type = 'unknown'

    def __init__(self, **kwargs):
        self._data = {}
        message = kwargs.pop('message', None)
        if message and isinstance(message, BaseMessage):
            if 'source' not in kwargs:
                kwargs['source'] = message.target
            if 'target' not in kwargs:
                kwargs['target'] = message.source
            if hasattr(message, 'agent') and 'agent' not in kwargs:
                kwargs['agent'] = message.agent
        if 'time' not in kwargs:
            kwargs['time'] = time.time()
        for name, value in kwargs.items():
            field = self._fields.get(name)

class DeviceUnbindEvent(BaseEvent):
    event = 'device_unbind'
    device_type = StringField('DeviceType')
    device_id = StringField('DeviceID')
    session_id = StringField('SessionID')
    content = Base64DecodeField('Content')
    open_id = StringField('OpenID')


@register_event('device_subscribe_status')
class DeviceSubscribeStatusEvent(BaseEvent):
    event = 'device_subscribe_status'
    device_type = StringField('DeviceType')
    device_id = StringField('DeviceID')
    open_id = StringField('OpenID')
    op_type = IntegerField('OpType')


@register_event('device_unsubscribe_status')
class DeviceUnsubscribeStatusEvent(BaseEvent):
    event = 'device_unsubscribe_status'
    device_type = StringField('DeviceType')
    device_id = StringField('DeviceID')
    open_id = StringField('OpenID')
    op_type = IntegerField('OpType')


@register_event('shakearoundusershake')
class ShakearoundUserShakeEvent(BaseEvent):
    event = 'shakearound_user_shake'
    _chosen_beacon = BaseField('ChosenBeacon', {})
    _around_beacons = BaseField('AroundBeacons', {})

@register_event('poi_check_notify')
class PoiCheckNotifyEvent(BaseEvent):
    event = 'poi_check_notify'
    poi_id = StringField('PoiId')
    uniq_id = StringField('UniqId')
    result = StringField('Result')
    message = StringField('Msg')


@register_event('wificonnected')
class WiFiConnectedEvent(BaseEvent):
    event = 'wificconnected'
    connect_time = IntegerField('ConnectTime')
    expire_time = IntegerField('ExpireTime')
    vendor_id = StringField('VendorId')
    shop_id = StringField('PlaceId')
    bssid = StringField('DeviceNo')


# ============================================================================
# 微信认证事件推送
# ============================================================================
@register_event('qualification_verify_success')
class QualificationVerifySuccessEvent(BaseEvent):
    """
    资质认证成功事件

    详情请参阅
    https://mp.weixin.qq.com/wiki?id=mp1455785130
    """

url = StringField('EventKey')


@register_event('masssendjobfinish')
class MassSendJobFinishEvent(BaseEvent):
    """
    群发消息任务完成事件

    详情请参阅
    https://mp.weixin.qq.com/wiki?id=mp1481187827_i0l21
    """
    id = IntegerField('MsgID', 0)
    event = 'masssendjobfinish'
    status = StringField('Status')
    total_count = IntegerField('TotalCount', 0)
    filter_count = IntegerField('FilterCount', 0)
    sent_count = IntegerField('SentCount', 0)
    error_count = IntegerField('ErrorCount', 0)


@register_event('templatesendjobfinish')
class TemplateSendJobFinishEvent(BaseEvent):
    """
    模板消息任务完成事件

    详情请参阅
    https://mp.weixin.qq.com/wiki?id=mp1433751277
    """
    id = IntegerField('MsgID')
    event = 'templatesendjobfinish'
    status = StringField('Status')