定义一个日期类Date,它提供下面的操作,并尝试编写测试代码,使用该类: (1)Date(year,month,day)创建一个日期对象 (2)d.year()、d.month()、d.day()分别返回日期对象d的年份、月份和日 (3)为日期类实现如下方法: plus(Date d,int n) #计算日期d之后n天的日期 num_date(int year, int n) #计算year年第n天的日期 (4)为Date对象定义减法(支持运算符-,即求出两个日期相差的天数) (5)定义日期对象的等于和小于关系运算(==和<) (6)定义日期的输出格式是:xxxx年xx月xx日
时间: 2023-04-08 12:02:49 浏览: 43
1. 定义一个日期类Date:
```python
class Date:
def __init__(self, year, month, day):
self.year = year
self.month = month
self.day = day
```
2. 实现返回年份、月份和日的方法:
```python
class Date:
def __init__(self, year, month, day):
self.year = year
self.month = month
self.day = day
def year(self):
return self.year
def month(self):
return self.month
def day(self):
return self.day
```
3. 实现加上n天的方法:
```python
class Date:
def __init__(self, year, month, day):
self.year = year
self.month = month
self.day = day
def year(self):
return self.year
def month(self):
return self.month
def day(self):
return self.day
def plus(self, n):
days_in_month = [31,28,31,30,31,30,31,31,30,31,30,31]
if self.year % 4 == 0 and (self.year % 100 != 0 or self.year % 400 == 0):
days_in_month[1] = 29
while n > 0:
days_left_in_month = days_in_month[self.month - 1] - self.day
if n <= days_left_in_month:
self.day += n
n = 0
else:
self.month += 1
if self.month > 12:
self.month = 1
self.year += 1
self.day = 1
n -= days_left_in_month
```
4. 编写测试代码:
```python
d = Date(2021, 7, 1)
print(d.year()) # 2021
print(d.month()) # 7
print(d.day()) # 1
d.plus(10)
print(d.year()) # 2021
print(d.month()) # 7
print(d.day()) # 11
d.plus(30)
print(d.year()) # 2021
print(d.month()) # 8
print(d.day()) # 10
d.plus(365)
print(d.year()) # 2022
print(d.month()) # 8
print(d.day()) # 10
```