Question

所以我有一个小的python脚本会询问用户用户名，然后它会从overrustlelogs.net中删除他们的日志以获取某个twitch.tv频道

目前我只有2个列表，一个是一年中的一个，因为日志URL的格式为

http://overrustlelogs.net/Channel%20chatlog/MonthName%20Year/user.txt

months = ['September','October','November','December','January','February','March','April','May','June','July','August','September','October','November','December','January','February','March','April','May','June','July','August']
years = ['2014','2014','2014','2014','2015','2015','2015','2015','2015','2015','2015','2015','2015','2015','2015','2015','2016','2016','2016','2016','2016','2016','2016','2016']

正如你可以看到我使用for循环并获取每个循环的索引的方式非常愚蠢，因为我必须每月手动编辑列表。

有什么更好的方法可以做到这一点？我希望程序将日志从2014年9月下载到当前的月份和年份

Answer 1

这是一个简单的脚本，可以帮助您。

使用datetime.timedelta()创建一个包含特定日期之间天数的列表。
然后它仅使用月份名称和年份（%B-%Y）
最后使用if not in条件删除重复项，同时循环计算t0和t1之间的计算天数。

<强>代码：

t0 = '21-06-2014'
t1 = '07-01-2016'

#formatting in the proper way to use timedelta()
start = datetime.datetime.strptime(t0, "%d-%m-%Y")
end = datetime.datetime.strptime(t1, "%d-%m-%Y")

#generating dates using list comprehension and timedelta()
date_generated = [start + datetime.timedelta(days=x) for x in range(0, (end-start).days)]

#removing duplicates using loop and 'if not in'
dates = []

for date in date_generated:
    s = str(date.strftime("%B-%Y"))
    if s not in dates:
        dates.append(s)

#printing dates    
for date in dates:
    print date

<强>输出：

June-2014
July-2014
August-2014
September-2014
October-2014
November-2014
December-2014
January-2015
February-2015
March-2015
April-2015
May-2015
June-2015
July-2015
August-2015
September-2015
October-2015
November-2015
December-2015
January-2016

生成dates列表后，我们现在可以使用：

for date in dates:
    MonthName = date.split('-')[0]
    Year = date.split('-')[1]
    url = 'http://overrustlelogs.net/Channel%20chatlog/' + MonthName + '%20' + Year + '/user.txt'
    print url

<强>输出：

http://overrustlelogs.net/Channel%20chatlog/June%202014/user.txt
http://overrustlelogs.net/Channel%20chatlog/July%202014/user.txt
http://overrustlelogs.net/Channel%20chatlog/August%202014/user.txt
http://overrustlelogs.net/Channel%20chatlog/September%202014/user.txt
http://overrustlelogs.net/Channel%20chatlog/October%202014/user.txt
http://overrustlelogs.net/Channel%20chatlog/November%202014/user.txt
http://overrustlelogs.net/Channel%20chatlog/December%202014/user.txt
http://overrustlelogs.net/Channel%20chatlog/January%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/February%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/March%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/April%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/May%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/June%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/July%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/August%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/September%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/October%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/November%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/December%202015/user.txt
http://overrustlelogs.net/Channel%20chatlog/January%202016/user.txt

Answer 2

除datetime模块外，您还可以查看calendar模块。但是，它没有内置迭代数月。

import calendar
from collections import namedtuple

MonthWithYear = namedtuple('MonthWithYear', ['month', 'year'])

def months_between(since, until):
    def between_including(array, el1, el2):
        since = array.index(el1)
        until = array.index(el2)
        yield from array[since: until + 1]# *including* last element too
    months = calendar.month_name
    if since.year == until.year:
        for month in between_including(list(months), since.month, until.month):
            yield MonthWithYear(month, since.year)
    else:
        yield from months_between(since, MonthWithYear(months[-1], since.year))
        for year in range(since.year + 1, until.year):
            yield from months_between(MonthWithYear(months[1], year), MonthWithYear(months[-1], year))
        yield from months_between(MonthWithYear(months[1], until.year), until)

since = MonthWithYear('January', 2016)
until = MonthWithYear('August', 2019)


for month in months_between(since, until):
    print(month.month, month.year)

循环并连接日志文件

2 个答案: