本节主要内容：
学习python操作日期与时间的方法。
例子，计算已过去多少个周末。
代码：
复制代码 代码示例:
#!/bin/python
#
#site: www.jb200.com
def weekends_between(d1,d2):
days_between = (d2-d1).days
weekends, leftover = divmod(days_between,7)
if leftover:
start_day = (d2-timedelta(leftover)).isoweekday()
end_day = start_day+leftover
if start_day<=6 and end_day>6:
weekends +=.5
if start_day<=7 and end_day>7:
weekends +=.5
return weekends
调用示例：
复制代码 代码示例:
weekends_between(date(2004,10,1),date(2004,10,10))
