循环查看具有年数的月份列表以检查文件是否存在

Question

我试图从2012年和11月开始,一直持续几年的月份列表,一直到当前年份和月份.

start_year = "2012"
start_month = "November"

month = start_month
year = start_year

# some sort of for loop or cycle here
    try:
        with open('{} {}.csv'.format(month, year)):
           CSVFile = True
        if CSVFile:
            print "do something cool here"
    except IOError:
        CSVFile = False
    print ""

任何有关如何获得此建议或建议的建议或建设性意见将不胜感激.谢谢SMNALLY

Answer 1

我可能会这样做如下:

import datetime,  os

current_month = datetime.date.today().replace(day=1)
# this could be more concise if `start_month` were the month number rather than month name
possible_month = datetime.datetime.strptime('%s %s' % (start_month, start_year), '%B %Y').date()
while possible_month <= current_month:
    csv_filename = possible_month.strftime('%B %Y') + '.csv'
    if os.path.exists(csv_filename):
        CSVFile = True
        # do something cool here, and maybe break the loop if you like
    possible_month = (possible_month + datetime.timedelta(days=31)).replace(day=1)

如果您需要我扩展它的工作方式,请告诉我.