Error in extract_feature.py

[jianchengss]

O2O-Predict-Coupon-Usage/extract_feature.py

Line 99 in 98f169b

t3['this_month_user_receive_same_coupon_lastone'] = t3.max_date_received - t3.date_received

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 'str'>
type(t3.max_date_received[0]) : <type 'numpy.float64'>

[InsaneLife]

python=2.7
if you use python=3.X, there could be mistakes.

[jianchengss]

I use python 2.7 already, still going to go wrong.

[InsaneLife]

I have read your error, you should change max_date_received to float:
t3['max_date_received'] = t3.max_date_received.astype(float)
t3['this_month_user_receive_same_coupon_lastone'] = t3.max_date_received - t3.date_received