#coding=utf-8 import datetime from datetime import timedelta now = datetime.datetime.now() #今天 today = now #昨天 yesterday = now - timedelta(days=1) #明天 tomorrow = now + timedelta(days=1)<br><br>#当前季度
# The first day and the last day of the week this_week_start = now - timedelta (Days = now.weekday ()) this_week_end = now + timedelta (Days = 6- now.weekday ()) # Last week, the first and last days last_week_start = now - timedelta (Days = now.weekday () + 7 ) last_week_end = now - timedelta (Days = now.weekday () + 1 ) # the first day and the last day of this month this_month_start = datetime.datetime (now.year, now .month, 1 ) this_month_end = datetime.datetime (now.year, now.month + 1, 1) - timedelta (Days = 1 ) # on the first day and last day of the month last_month_end = this_month_start - timedelta (Days = 1 ) last_month_startA datetime.datetime = (last_month_end.year, last_month_end.month,. 1 ) # season first and last month The = (now.month -. 1) - (now.month -. 1) +. 1. 3% this_quarter_start = A datetime.datetime (now.year, month the,. 1 ) this_quarter_end = a datetime.datetime (now.year, month the +. 3,. 1) - timedelta (Days =. 1 ) # on the first and last quarter last_quarter_end = this_quarter_start - timedelta (days = 1 ) last_quarter_start = A datetime.datetime (last_quarter_end.year, last_quarter_end.month - 2,. 1 ) # year first and last this_year_start = A datetime.datetime (now.year,. 1,. 1 ) this_year_endDatetime.datetime = (now.year + 1, 1, 1) - timedelta (Days = 1 ) # the first day and the last day of last year last_year_end = this_year_start - timedelta (Days = 1 ) last_year_start = datetime.datetime (last_year_end.year, 1, 1)