如何生成偶数日历日期？

2 回答

• 1

  这里有一些相当简单的东西似乎可以工作并处理闰年：

  from calendar import isleap
  from datetime import date
  
  # Days in each month (1-12).
  MDAYS = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
  
  def dim(year, month):
      """ Number of days in month of the given year. """
      return MDAYS[month] + ((month == 2) and isleap(year))
  
  start_year, end_year = 2018, 2021
  
  for year in range(start_year, end_year+1):
      for month in range(1, 12+1):
          days = dim(year, month)
          for day in range(1, days+1):
              if day % 2 == 0:
                  dt = date(year, month, day)
                  print(dt.strftime('%a, %d %b %Y'))
  

  输出：

  Tue, 02 Jan 2018
  Thu, 04 Jan 2018
  Sat, 06 Jan 2018
  Mon, 08 Jan 2018
  Wed, 10 Jan 2018
  Fri, 12 Jan 2018
  Sun, 14 Jan 2018
  Tue, 16 Jan 2018
  ...
  

  Edit:

  这是一种方法（我认为）你在后续问题中提出了如何做的事情：

  from calendar import isleap
  from datetime import date, datetime, time
  from random import randrange
  
  # Days in each month (1-12).
  MDAYS = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
  
  def dim(year, month):
      """ Number of days in month of the given year. """
      return MDAYS[month] + ((month == 2) and isleap(year))
  
  def whenever():
      """ Gets the time value. """
      # Currently just returns a randomly selected time of day.
      return time(*map(randrange, (24, 60, 60)))  # hour:minute:second
  
  start_year, end_year = 2018, 2021
  
  for year in range(start_year, end_year+1):
      for month in range(1, 12+1):
          days = dim(year, month)
          for day in range(1, days+1):
              if day % 2 == 0:
                  dt, when = date(year, month, day), whenever()
                  dttm = datetime.combine(dt, when)
                  print(dt.strftime('%a, %d %b %Y'), when, '-', dttm)
  

  输出：

  Tue, 02 Jan 2018 00:54:02 - 2018-01-02 00:54:02
  Thu, 04 Jan 2018 10:19:51 - 2018-01-04 10:19:51
  Sat, 06 Jan 2018 22:48:09 - 2018-01-06 22:48:09
  Mon, 08 Jan 2018 06:48:46 - 2018-01-08 06:48:46
  Wed, 10 Jan 2018 14:01:54 - 2018-01-10 14:01:54
  Fri, 12 Jan 2018 05:42:43 - 2018-01-12 05:42:43
  Sun, 14 Jan 2018 21:42:37 - 2018-01-14 21:42:37
  Tue, 16 Jan 2018 08:08:39 - 2018-01-16 08:08:39
  ...
  

  回复于 2024-05-04T22:23:33+08:00
• 0

  关于什么：

  import datetime
  
  d = datetime.date.today()                       # Define Start date
  while d.year <= 2021:                           # This will go *through* 2012
          if d.day % 2 == 0:                      # Print if even date
                  print(d.strftime('%a, %d %b %Y'))
          d += datetime.timedelta(days=1)         # Jump forward a day
  

  Wed, 31 Oct 2018
  Fri, 02 Nov 2018
  Sun, 04 Nov 2018
  Tue, 06 Nov 2018
  Thu, 08 Nov 2018
  Sat, 10 Nov 2018
  Mon, 12 Nov 2018
  Wed, 14 Nov 2018
  Fri, 16 Nov 2018
  Sun, 18 Nov 2018
  Tue, 20 Nov 2018
  Thu, 22 Nov 2018
  ...
  Fri, 24 Dec 2021
  Sun, 26 Dec 2021
  Tue, 28 Dec 2021
  Thu, 30 Dec 2021
  

  回复于 2024-05-04T22:23:33+08:00