1 2 3 4 # 这个data_matrix[:,dimen] <= thresh_val 内标会返回data_matrix当中的值符合条件的，返回为True 5 # ret_array 中就会返回 下标为True的值 6 ret_array[data_matrix[:,dimen] <= thresh_val] = -1.0 7 8 9 # https://www.cnblogs.com/prolifes/articles/5195528.html 10 # 亲测季度可用 11 12 #coding=utf-8 13 import datetime 14 from datetime import timedelta 15 16 now = datetime.datetime.now() 17 18 #今天 19 today = now 20 21 #昨天 22 yesterday = now - timedelta(days=1) 23 24 #明天 25 tomorrow = now + timedelta(days=1)<br><br>#当前季度 26 27 now_quarter = now.month / 3 if now.month % 3 == 0 else now.month / 3 + 1 28 29 #本周第一天和最后一天 30 this_week_start = now - timedelta(days=now.weekday()) 31 this_week_end = now + timedelta(days=6-now.weekday()) 32 33 #上周第一天和最后一天 34 last_week_start = now - timedelta(days=now.weekday()+7) 35 last_week_end = now - timedelta(days=now.weekday()+1) 36 37 #本月第一天和最后一天 38 this_month_start = datetime.datetime(now.year, now.month, 1) 39 this_month_end = datetime.datetime(now.year, now.month + 1, 1) - timedelta(days=1) 40 41 #上月第一天和最后一天 42 last_month_end = this_month_start - timedelta(days=1) 43 last_month_start = datetime.datetime(last_month_end.year, last_month_end.month, 1) 44 45 #本季第一天和最后一天 46 month = (now.month - 1) - (now.month - 1) % 3 + 1 47 this_quarter_start = datetime.datetime(now.year, month, 1) 48 this_quarter_end = datetime.datetime(now.year, month + 3, 1) - timedelta(days=1) 49 50 #上季第一天和最后一天 51 last_quarter_end = this_quarter_start - timedelta(days=1) 52 last_quarter_start = datetime.datetime(last_quarter_end.year, last_quarter_end.month - 2, 1) 53 54 #本年第一天和最后一天 55 this_year_start = datetime.datetime(now.year, 1, 1) 56 this_year_end = datetime.datetime(now.year + 1, 1, 1) - timedelta(days=1) 57 58 #去年第一天和最后一天 59 last_year_end = this_year_start - timedelta(days=1) 60 last_year_start = datetime.datetime(last_year_end.year, 1, 1)