How do I calculate number of days between two dates using Python?
如果我有两个日期（例如'8/18/2008'和'9/26/2008' ），获得这两个日期之间的天数的最佳方法是什么？
If you have two date objects, you can just subtract them.
from datetime import date
d0 = date(2008, 8, 18)
d1 = date(2008, 9, 26)
delta = d1 - d0
print delta.days
The relevant section of the docs: https://docs.python.org/library/datetime.html
使用日期时间的力量：
from datetime import datetime
date_format = "%m/%d/%Y"
a = datetime.strptime('8/18/2008', date_format)
b = datetime.strptime('9/26/2008', date_format)
delta = b - a
print delta.days # that's it
Days until Christmas:
>>> import datetime
>>> today = datetime.date.today()
>>> someday = datetime.date(2008, 12, 25)
>>> diff = someday - today
>>> diff.days
86
More arithmetic here.
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