from datetime import datetime
from datetime import timedelta
# time = datetime(year, month, day)
time = datetime(2012, 4, 1)
d = time + timedelta(weeks=0, days=1, hours=0, minutes=0, seconds=0, milliseconds=0, microseconds=0, )
# 将日期转换成字符串
date = d.strftime('%Y-%m-%d')
