获取间隔天数
import time
start_date = '2017-01-01' #开始日期
end_date = '2017-06-05' #结束日期
start_sec = time.mktime(time.strptime(start_date, '%Y-%m-%d'))
end_sec = time.mktime(time.strptime(end_date, '%Y-%m-%d'))
work_days = int((end_sec - start_sec) / (24 * 60 * 60)) #间隔天数
print(work_days)
