将性别进行编码： https://github.com/Bifzivkar/Boutique-Travel-Services-Predict/blob/master/feature/2_feature_encode.py
- gender_mapping = {lab: idx for idx, lab in enumerate(set(userProfile_train['gender'].dropna()))}
2、？？ 109行
| orderFuture['latest_type'][~(orderFuture['latest_type'] >= 0)] = 0 # 历史未下单 类型为0 |
last（）
| latest = orderHistory[['userid', 'orderid', 'orderType', 'order_time']].groupby(['userid']).last().reset_index() |
https://github.com/Bifzivkar/Boutique-Travel-Services-Predict/blob/master/feature/5_extract_feature.py
userProfile['province_123'][userProfile['province'].isin(province_1)] = 1 ???
3、 126行到144行代码有啥用啊，根本没用到这个特征
255行： action.orderid 哪里来的