python date format
时间: 2023-10-23 08:32:33 浏览: 155
In Python, you can use the `strftime()` method to format dates. Here's an example:
```python
from datetime import datetime
date = datetime.now()
formatted_date = date.strftime("%Y-%m-%d %H:%M:%S")
print(formatted_date)
```
This code will output the current date and time in the format "YYYY-MM-DD HH:MM:SS". You can customize the format string to display the date and time in different formats according to your requirements.
相关问题
python datetime format
Python datetime format指的是将日期时间对象转换为字符串时所使用的格式。在Python中,可以使用datetime模块中的strftime()方法将datetime对象转换为字符串,并指定格式化字符串来控制输出的格式。
以下是一些常用的datetime格式化字符串:
- %Y:四位数的年份
- %m:两位数的月份(01~12)
- %d:两位数的日期(01~31)
- %H:24小时制的小时数(00~23)
- %M:分钟数(00~59)
- %S:秒数(00~59)
- %A:星期几的完整名称(例如,Monday)
- %a:星期几的缩写名称(例如,Mon)
- %B:月份的完整名称(例如,January)
- %b:月份的缩写名称(例如,Jan)
例如,将当前的datetime对象以"%Y-%m-%d %H:%M:%S"的格式输出,可以这样写:
```
import datetime
now = datetime.datetime.now()
formatted_date = now.strftime("%Y-%m-%d %H:%M:%S")
print(formatted_date)
```
输出结果可能类似于:2021-06-09 15:30:00。
python的format
Python的format()方法是用于格式化字符串的内置方法。它通过将表达式、值或变量插入到字符串中的占位符 {} 中来创建格式化的字符串。
以下是一些常见的格式化字符串的示例:
1. 使用位置参数
```python
name = 'John'
age = 30
print('My name is {} and I am {} years old.'.format(name, age))
```
输出:
```
My name is John and I am 30 years old.
```
2. 使用关键字参数
```python
print('My name is {name} and I am {age} years old.'.format(name='John', age=30))
```
输出:
```
My name is John and I am 30 years old.
```
3. 格式化数字
```python
num = 123.456
print('The number is {:.2f}'.format(num))
```
输出:
```
The number is 123.46
```
4. 格式化日期和时间
```python
import datetime
date = datetime.datetime.now()
print('Today is {:%d-%m-%Y}'.format(date))
```
输出:
```
Today is 24-09-2021
```
以上只是一些常见的格式化字符串的示例,format()方法还有很多高级用法,可以参考Python官方文档。
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