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pppy
V2EX  ›  Python

获取下个周三的日期

  •  
  •   pppy · 2016-11-28 17:20:35 +08:00 · 4839 次点击
    这是一个创建于 2250 天前的主题,其中的信息可能已经有所发展或是发生改变。

    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

    15 条回复    2016-11-29 15:09:27 +08:00
    luosch
        1
    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
        2
    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
        3
    Jakesoft  
       2016-11-28 18:04:44 +08:00
    php:

    datetime('Y-m-d H:i:s', strtotime('next Wednesday'));
    l9rw
        4
    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
        5
    Contextualist  
       2016-11-28 20:12:30 +08:00 via iPad
    def get_wednesday_date():
       today = datetime.datetime.today().isoweekday()
       time_delta = timedelta(date=3 - today + (3<today) * 7)
       return today + time_delta
    tumbzzc
        6
    tumbzzc  
       2016-11-28 21:08:39 +08:00
    搞不懂~我的不是最简洁的吗?
    0915240
        7
    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
        8
    Arnie97  
       2016-11-29 00:44:08 +08:00 via Android
    @tumbzzc 审题错误,零分😂
    slixurd
        9
    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
        10
    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
        11
    pppy  
    OP
       2016-11-29 12:37:24 +08:00
    感觉 @Contextualist 的比较清真
    FreeBTC123
        12
    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
        13
    FreeBTC123  
       2016-11-29 14:30:16 +08:00
    囧, 搞成下周的周三了
    FreeBTC123
        14
    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
        15
    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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