PythonDatetime.date类的replace()函数

replace()函数用于操作DateTime 模块的DateTime 类对象。通常，它会替换日期（年、月、日）并返回一个新的 DateTime 对象。

Syntax: replace(year=self.year, month=self.month, day=self.day)

Parameters:

• Year: New year value (range: 1 <= year <= 9999)
• month: New month value(range: 1 <= month <= 12)
• day: New day value(range: 1<= day <= 31)

Returns: New datetime object.

示例 1：用 datetime 对象替换年份。

Python3

# import module
from datetime import date
  
# Creating an instance
# of datetime
Date = date(2010, 2, 12)
print("Original date : ", Date)
  
# Using replace() method
New_date = Date.replace(year=2021)
print("After Modify the year:", New_date)

输出

Original date :  2010-02-12
After Modify the year: 2021-02-12

示例 2：用 datetime 对象替换月份。

蟒蛇3

# import module
from datetime import date
  
# Creating an instance
# of datetime
Date = date(2010, 2, 12)
print("Original date : ", Date)
  
# Using replace() method
New_date = Date.replace(month=5)
print("After Modify the month:", New_date)

输出

Original date :  2010-02-12
After Modify the month: 2010-05-12

示例 3：将日期替换为 datetime 对象。

蟒蛇3

# import module
from datetime import date
  
# Creating an instance
# of datetime
Date = date(2010, 2, 12)
print("Original date : ", Date)
  
# Using replace() method
New_date = Date.replace(day=21)
print("After Modify the day:", New_date)

输出

Original date :  2010-02-12
After Modify the day: 2010-02-21

示例 4：用 datetime 对象替换时间。

蟒蛇3

from datetime import datetime
  
Date = datetime(2010, 2, 12, 8, 50, 23)
print("Original date and time : ", Date)
  
New_date = Date.replace(hour=1,
                        minute=3,
                        second=12)
print("After modify date and time : ", New_date)

输出

Original date and time :  2010-02-12 08:50:23
After modify date and time :  2010-02-12 01:03:12