pandas 中datetime型数据的操作(dt.*)

data['日期'] =data_2019['交易时间'].dt.date
data['时间'] =data_2019['交易时间'].dt.time
data['年'] = data_2019['交易时间'].dt.year
data['季节'] = data_2019['交易时间'].dt.quarter
data['月'] = data_2019['交易时间'].dt.month
data['周']=data_2019['交易时间'].dt.week
data['日'] = data_2019['交易时间'].dt.day
data['小时'] =data_2019['交易时间'].dt.hour
data['分钟'] =data_2019['交易时间'].dt.minute
data['秒'] = data_2019['交易时间'].dt.second
data['一年第几天'] =data_2019['交易时间'].dt.dayofyear
data['一年第几周'] = data_2019['交易时间'].dt.weekofyear
data['一周第几天'] = data_2019['交易时间'].dt.dayofweek
data['一个月含有多少天'] = data_2019['交易时间'].dt.days_in_month
data['星期名称'] =data_2019['交易时间'].dt.weekday_name
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date_time 相减得到 timedelta型数据
timedelta.components
timedelta.delta/36e11 -> 将时间间隔转化成小时