我有以下代码来做到这一点,但我如何能做得更好?现在我认为它比嵌套循环更好,但是当您在列表理解中使用生成器时,它开始变得像perl一行程序。

day_count = (end_date - start_date).days + 1
for single_date in [d for d in (start_date + timedelta(n) for n in range(day_count)) if d <= end_date]:
    print strftime("%Y-%m-%d", single_date.timetuple())

笔记

我不是用这个来打印的。这只是为了演示。 start_date和end_date变量是datetime。date对象,因为我不需要时间戳。(它们将用于生成报告)。

样例输出

开始日期为2009-05-30,结束日期为2009-06-09:

2009-05-30
2009-05-31
2009-06-01
2009-06-02
2009-06-03
2009-06-04
2009-06-05
2009-06-06
2009-06-07
2009-06-08
2009-06-09

当前回答

在元组中存储范围参数的可逆步骤略有不同。

def date_range(start, stop, step=1, inclusive=False):
    day_count = (stop - start).days
    if inclusive:
        day_count += 1

    if step > 0:
        range_args = (0, day_count, step)
    elif step < 0:
        range_args = (day_count - 1, -1, step)
    else:
        raise ValueError("date_range(): step arg must be non-zero")

    for i in range(*range_args):
        yield start + timedelta(days=i)

其他回答

from datetime import date,timedelta
delta = timedelta(days=1)
start = date(2020,1,1)
end=date(2020,9,1)
loop_date = start
while loop_date<=end:
    print(loop_date)
    loop_date+=delta
import datetime
from dateutil.rrule import DAILY,rrule

date=datetime.datetime(2019,1,10)

date1=datetime.datetime(2019,2,2)

for i in rrule(DAILY , dtstart=date,until=date1):
     print(i.strftime('%Y%b%d'),sep='\n')

输出:

2019Jan10
2019Jan11
2019Jan12
2019Jan13
2019Jan14
2019Jan15
2019Jan16
2019Jan17
2019Jan18
2019Jan19
2019Jan20
2019Jan21
2019Jan22
2019Jan23
2019Jan24
2019Jan25
2019Jan26
2019Jan27
2019Jan28
2019Jan29
2019Jan30
2019Jan31
2019Feb01
2019Feb02

显示从今天开始的最后n天:

import datetime
for i in range(0, 100):
    print((datetime.date.today() + datetime.timedelta(i)).isoformat())

输出:

2016-06-29
2016-06-30
2016-07-01
2016-07-02
2016-07-03
2016-07-04

在元组中存储范围参数的可逆步骤略有不同。

def date_range(start, stop, step=1, inclusive=False):
    day_count = (stop - start).days
    if inclusive:
        day_count += 1

    if step > 0:
        range_args = (0, day_count, step)
    elif step < 0:
        range_args = (day_count - 1, -1, step)
    else:
        raise ValueError("date_range(): step arg must be non-zero")

    for i in range(*range_args):
        yield start + timedelta(days=i)

这个函数有一些额外的特性:

can pass a string matching the DATE_FORMAT for start or end and it is converted to a date object can pass a date object for start or end error checking in case the end is older than the start import datetime from datetime import timedelta DATE_FORMAT = '%Y/%m/%d' def daterange(start, end): def convert(date): try: date = datetime.datetime.strptime(date, DATE_FORMAT) return date.date() except TypeError: return date def get_date(n): return datetime.datetime.strftime(convert(start) + timedelta(days=n), DATE_FORMAT) days = (convert(end) - convert(start)).days if days <= 0: raise ValueError('The start date must be before the end date.') for n in range(0, days): yield get_date(n) start = '2014/12/1' end = '2014/12/31' print list(daterange(start, end)) start_ = datetime.date.today() end = '2015/12/1' print list(daterange(start, end))