Pythonで日付を取得操作する - Qiita

from datetime import datetime from datetime import timedelta str_date = '2018/11/11' base_date = datetime.strptime(str_date, '%Y/%m/%d') print(base_date) -----result----- 2018-11-11 00:00:00 ---------------- #10日前 before_10days = base_date - timedelta(days=10) #10日後 before_10days = base_date - timedelta(days=10) print(before_10days) -----result----- 2018-11-01 00:00:00 ``` ##csvを使用した日付の操作 ```day.c