python计算 从今天开始,100天后星期几

发布网友 发布时间：2022-05-10 09:55

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懂视网 时间：2022-05-10 14:16

from datetime import datetime, timedelta 
weekdays = ['Monday','Tuesday','Wednesday','Thursday', 
  'Friday','Saturday','Sunday'] 
def get_previous_byday(dayname, start_date=None): 
 if start_date is None: 
 start_date = datetime.today() 
 day_num = start_date.weekday() 
 day_num_target = weekdays.index(dayname) 
 days_ago = (7 + day_num - day_num_target) % 7 
 if days_ago == 0: 
 days_ago = 7 
 target_date = start_date - timedelta(days = days_ago) 
 return target_date 
 
print( datetime.today() ) 
print( get_previous_byday('Monday') ) 
print( get_previous_byday('Monday', datetime(2016, 8, 28)) )

第二种方法，用dateutil模块

from datetime import datetime 
from dateutil.relativedelta import relativedelta 
from dateutil.rrule import * 
d = datetime.now() 
print(d) 
print(d + relativedelta(weekday=FR)) 
print(d + relativedelta(weekday=FR(-1)))

热心网友 时间：2022-05-10 11:24

import time,datetime

def get_week_day(date):
week_day_dict = {
0 : '星期一',
1 : '星期二',
2 : '星期三',
3 : '星期四',
4 : '星期五',
5 : '星期六',
6 : '星期天',
}
day = date.weekday()
return week_day_dict[day]


days = 100
print(get_week_day(datetime.datetime.now() + datetime.timedelta( days )))