输入某年某月某日,判断这一天是这一年的第几天?(可以用 Python 标准 库)
import datetime
def dayofyear():
year = input("请输入年份:")
month = input("请输入月份:")
day = input("请输入天:")
date1 = datetime.date(year=int(year),month=int(month),day=int(day))
date2 = datetime.date(year=int(year),month=1,day=1)
return (date1 - date2).days + 1
print(dayofyear())