pandas日期类型差值timedelta大于等于7天p_eci_cross[create_date]pd.to_datetime(p_eci_cross[create_date])p_eci_cross_viotp_eci_cross.groupby([cell_identification]).agg(日期最大值(create_date,max),日期最小值(create_date,min))p_eci_cross_viotp_eci_cross_viot.reset_index()p_eci_cross_viot[日期差]p_eci_cross_viot[日期最大值]-p_eci_cross_viot[日期最小值]print(fp_eci_cross_viot{p_eci_cross_viot.dtypes})#p_eci_cross_viotp_eci_cross_viot[p_eci_cross_viot[日期差]pd.DateOffset(days7)]td pd.to_timedelta(7 days)p_eci_cross_viot p_eci_cross_viot[p_eci_cross_viot[日期差] td]