用批处理列出所有名称为yyyy-mm-dd格式的文件夹
时间: 2023-02-09 12:17:31 浏览: 214
Sure! Here's a sample script that lists all folders in the current directory that are named in the "yyyy-mm-dd" format:
```
@echo off
for /f "delims=" %%a in ('dir /b /ad') do (
if "%%a" == "????????-??-??" (
echo %%a
)
)
```
This script uses a `for` loop to iterate through all of the directories (`/ad`) in the current directory (`/b`) and checks each one to see if its name matches the "yyyy-mm-dd" format. If it does, it will be displayed on the screen.
相关问题
用批处理列出所有名称为年-月-日格式的文件夹
并打印出它们的名称。
Here's a batch script that lists all folders with names in the format of "YYYY-MM-DD" and prints their names:
```
@echo off
for /d %%F in (*-*) do (
for /f "tokens=1-3 delims=-" %%A in ("%%F") do (
if /i %%A ge 1900 if /i %%A le 2100 (
if /i %%B ge 1 if /i %%B le 12 (
if /i %%C ge 1 if /i %%C le 31 (
echo %%F
)
)
)
)
)
```
This script uses two nested `for` loops. The outer loop `for /d %%F in (*-*)` iterates over all directories that contain a hyphen in their names. The inner loop `for /f "tokens=1-3 delims=-" %%A in ("%%F")` splits the directory name into three parts using the hyphen as a delimiter, and assigns each part to the variables `%%A`, `%%B`, and `%%C`.
The script then checks if each part is within a valid range for the year, month, and day. If all parts are valid, it prints the directory name.
jupyternotebook中将一列日期格式yyyymmdd转化为yyyy-mm-dd
可以使用Pandas库来完成日期格式的转换。假设我们有一个DataFrame对象,其中包含一个名为`date`的列,存储的是原始的日期字符串,格式为`yyyymmdd`,那么可以通过如下代码将其转换为`yyyy-mm-dd`的格式:
```python
import pandas as pd
df = pd.read_csv('data.csv') # 读取包含日期列的CSV文件
df['date'] = pd.to_datetime(df['date'], format='%Y%m%d') # 将日期列转换为Pandas的datetime类型
df['date'] = df['date'].dt.strftime('%Y-%m-%d') # 将日期格式化为yyyy-mm-dd的格式
```
其中,`pd.to_datetime()`函数用于将日期列转换为Pandas的datetime类型,第二个参数`format='%Y%m%d'`表示原始日期字符串的格式为`yyyymmdd`;`dt.strftime()`函数用于将datetime类型的日期转换为指定格式的字符串,第二个参数`'%Y-%m-%d'`表示目标格式为`yyyy-mm-dd`。
转换后,DataFrame对象中的`date`列就变成了`yyyy-mm-dd`格式的日期字符串。