把missing_times中"%Y-%m-%d %H:%M:%S"转换为'%Y-%m-%d'
时间: 2024-08-13 21:08:32 浏览: 59
如果你想从`missing_times`这个变量中,将日期时间格式`%Y-%m-%d %H:%M:%S`转换为`%Y-%m-%d`,你可以使用Python的datetime模块中的`strftime()`函数。这个函数用于格式化日期和时间对象。
这里是一个简单的例子:
```python
from datetime import datetime
# 假设missing_times是一个字符串列表,其中包含日期时间
missing_times = ["2023-01-01 12:00:00", "2023-01-02 13:30:45"]
# 使用strftime()函数去除时间部分
formatted_times = [datetime.strptime(missing_time, "%Y-%m-%d %H:%M:%S").strftime("%Y-%m-%d") for missing_time in missing_times]
# 现在formatted_times包含了原始日期,格式为"%Y-%m-%d"
formatted_times
```
这段代码首先将每个字符串解析成一个datetime对象,然后用新的格式字符串`"%Y-%m-%d"`重新格式化,只保留年月日的部分。
相关问题
time data '20230330' does not match format '%Y-%m-%d'
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Null is a term used to describe the absence of a value or a lack of content. In programming, null is often used to indicate that a variable or object has not been assigned a value. It can also be used to indicate a lack of data or an undefined state. In databases, null is used to represent missing or unknown data.