如果您有两个日期对象，您可以减去它们，从而计算出 timedelta 对象。

If you have two date objects, you can just subtract them, which computes a timedelta object.

from datetime import date

d0 = date(2008, 8, 18)
d1 = date(2008, 9, 26)
delta = d1 - d0
print(delta.days)

文档的相关部分：
https://docs.python.org/library/datetime.html 。

请参见此答案作为另一个示例。

See this answer for another example.