获取下个周三的日期

2016-11-28 17:20:35 +08:00
 pppy

以周三为例，根据当前时间点，获取下一次最近的周三日期

 def get_wednesday_date():
     today = date.today()  
     days = 2 - today.weekday()  
     time_delta = timedelta(days=days) if days > 0 else timedelta(days=7+days) 
     return  today + time_delta

可以就代码风格和实现讨论，提供更 pythonic 的想法

5390 次点击
所在节点    Python
15 条回复
luosch
2016-11-28 17:43:06 +08:00
```python

def get_wednesday_date():
return date.today() + timedelta(((2 - date.today().weekday()) + 7) % 7)

```
tumbzzc
2016-11-28 18:04:13 +08:00
import datetime

now=datetime.datetime.now()
dayslater=now+datetime.timedelta(7)
print(dayslater.strftime('%Y%m%d'))
Jakesoft
2016-11-28 18:04:44 +08:00
php:

datetime('Y-m-d H:i:s', strtotime('next Wednesday'));
l9rw
2016-11-28 19:13:50 +08:00
@Jakesoft php 原生没有 datetime 函数吧。 echo date('Y-m-d', strtotime('next Wednesday'));
Contextualist
2016-11-28 20:12:30 +08:00
def get_wednesday_date():
   today = datetime.datetime.today().isoweekday()
   time_delta = timedelta(date=3 - today + (3<today) * 7)
   return today + time_delta
tumbzzc
2016-11-28 21:08:39 +08:00
搞不懂~我的不是最简洁的吗？
0915240
2016-11-28 22:53:18 +08:00
```jodatime or javase8

LocalDate localDate = LocalDate.now();
System.out.println(localDate.with(DayOfWeek.WEDNESDAY).plusWeeks(1));

```
Arnie97
2016-11-29 00:44:08 +08:00
@tumbzzc 审题错误，零分😂
slixurd
2016-11-29 01:00:20 +08:00
给另一个 Joda Time 的写法
DateTime nextWednesday = new DateTime().withDayOfWeek(3).plus(Weeks.ONE);
zzyzxd
2016-11-29 04:00:29 +08:00
```
>>> import parsedatetime
>>> cal = parsedatetime.Calendar()
>>> cal.parse("next Wednesday")
(time.struct_time(tm_year=2016, tm_mon=12, tm_mday=7, tm_hour=9, tm_min=0, tm_sec=0, tm_wday=2, tm_yday=342, tm_isdst=-1), 1)
>>> cal.parse("this coming wednesday")
(time.struct_time(tm_year=2016, tm_mon=11, tm_mday=30, tm_hour=19, tm_min=59, tm_sec=28, tm_wday=2, tm_yday=335, tm_isdst=-1), 1)
```

（逃……
pppy
2016-11-29 12:37:24 +08:00
感觉 @Contextualist 的比较清真
FreeBTC123
2016-11-29 14:26:22 +08:00
* 安装
```shell
pip install isoweek
```

* 使用
```python
In [1]: from isoweek import Week

In [2]: (Week.thisweek() + 1).wednesday()
Out[2]: datetime.date(2016, 12, 7)
```
FreeBTC123
2016-11-29 14:30:16 +08:00
囧，　搞成下周的周三了
FreeBTC123
2016-11-29 14:55:25 +08:00
```python
In [1]: from datetime import datetime

In [2]: from isoweek import Week

In [3]: def coming_weekday(num):
...: this_week = Week.thisweek()
...: this_weekday = this_week.day(num)
...: return this_weekday if this_weekday > datetime.now().date() else (this_week + 1).day(num)
...:

In [4]: coming_weekday(2)
Out[4]: datetime.date(2016, 11, 30)

In [5]: # 0 is Monday
```
FreeBTC123
2016-11-29 15:09:27 +08:00
```python
In [13]: def coming_weekday(num):
this_week = Week.thisweek()
return (this_week + (not this_week.day(num) > datetime.now().date())).day(num)
....:
```

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