O2O-Predict-Coupon-Usage
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天池O2O优惠券使用预测第一赛季部分代码
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O2O-Predict-Coupon-Usage issues
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https://github.com/InsaneLife/O2O-Predict-Coupon-Usage/blob/98f169b7149b99a73741a783faba57cad0e150e3/extract_feature.py#L99 ``` t3['this_month_user_receive_same_coupon_lastone'] = t3.max_date_received - t3.date_received unsupported operand type(s) for -: 'float' and 'str' type(t3.date_received[0]) : type(t3.max_date_received[0]) : ```