测试的时间为：2018-10-31 晚7点左右
获取当前datetime
# 获取当前时间 now = datetime.datetime.now() print now # 2018-10-31 19:53:05.507000 print now.day # 31 几号 print now.month # 10 几月 print now.year # 2018 哪一年 print now.hour # 19 时 print now.minute # 53 分 print now.second # 5 秒 print now.microsecond # 507000 毫秒
获取当前date
# 获取当前日期 date_today = datetime.date.today() print date_today # 2018-10-31 日期 print date_today.day # 31 天 print date_today.month # 10 月 print date_today.year # 2018 年
获取明天/前n天
# 获取明天/前N天 today = datetime.date.today() # 明天 tomorrow = today + datetime.timedelta(days=1) # 前3天 pre_n_day = today - datetime.timedelta(days=3) print today # 2018-10-31 print tomorrow # 2018-11-01 print pre_n_day # 2018-10-28
获取两个datetime的时间差
# 获取时间差 pre_time = datetime.datetime(2018, 9, 10, 6, 0, 0) # 年月日时分秒 now = datetime.datetime.now() total_days = (now - pre_time).days # 相差的天数 total_seconds = (pre_time - now).seconds # 相差的秒数 print now - pre_time # 51 days, 14:18:12.272000 print total_days # 51 print total_seconds # 34907
获取本周/本月/上月最后一天
# 获取本周最后一天日期 today = datetime.date.today() sunday = today + datetime.timedelta(6 - today.weekday()) print sunday # 2018-11-04 # 获取本月最后一天 today = datetime.date.today() _, month_total_days = calendar.monthrange(today.year, today.month) month_last_day = datetime.date(today.year, today.month, month_total_days) print month_last_day # 2018-10-31 # 获取上个月的最后一天 today = datetime.date.today() first = datetime.date(day=1, month=today.month, year=today.year) pre_month_last_day = first - datetime.timedelta(days=1) print pre_month_last_day # 2018-09-30
参考资料：
timedelta 相关
https://www.cnblogs.com/zknublx/p/6017094.html
calendar 相关
https://www.cnblogs.com/keqipu/p/7228502.html
其他