在python中生成给定范围内的所有日期 [英] Generating all dates within a given range in python

问题描述

我有两个字符串变量，其中包含yyyy-mm-dd格式的日期，如下所示：

I have two string variables which contain dates in yyyy-mm-dd format as follows :

date1 = '2011-05-03'
date2 = '2011-05-10'

我想写生成范围从date1到date2的所有日期的代码。如何在Python中完成？

I want to write code that generates all dates in the range date1 to date2. How can this be done in Python?

推荐答案

日期可以相互比较，就像数字一样，与datetime.timedelta对象相关的数学。没有理由在这里使用dateutil，没有理由硬编码迭代次数（9）。这真的变得与处理普通旧数字的方式类似。

Dates can be compared to each other just like numbers, and you can do date-related math with the datetime.timedelta object. There's no reason to use dateutil here, and there's no reason to hard-code the number of iterations a la 'range(9)'. This really becomes similar to how you'd deal with plain old numbers.

>>> import datetime
>>> date1 = '2011-05-03'
>>> date2 = '2011-05-10'
>>> start = datetime.datetime.strptime(date1, '%Y-%m-%d')
>>> end = datetime.datetime.strptime(date2, '%Y-%m-%d')
>>> step = datetime.timedelta(days=1)
>>> while start <= end:
...     print start.date()
...     start += step
... 
2011-05-03
2011-05-04
2011-05-05
2011-05-06
2011-05-07
2011-05-08
2011-05-09
2011-05-10
>>> 

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