Python 计算已经过去多少个周末详解编程语言

计算已经过去多少个周末。

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

使用：weekends_between(date(2014,10,1),date(2014,10,10))