pandas, datetime 格式化輸出日期

 raw_data["TradeDate"].head()
0    2020-02-22 14:01:23.451000
1    2020-02-20 16:40:56.190000
2    2020-02-20 16:11:16.420000
3    2020-02-22 00:30:43.451000
4    2020-02-24 05:35:09.783000
Name: TradeDate, dtype: object


temp = pd.to_datetime(raw_data["TradeDate"])
temp = temp.apply(lambda x: datetime.datetime.strftime(x,"%Y-%m-%d"))

>>> temp.head()
0    2020-02-22
1    2020-02-20
2    2020-02-20
3    2020-02-22
4    2020-02-24

是不是十分簡單