A way to read a path and file on a file path in Python

This has a lapse of time, I can not remember the specific statements, and now summarize.

First, get the current file path

Second, get the previous level file path

Here you can imagine getting the path to your own sibling file, so write:

That is to get the parent directory first, and then through the join function to put the sibling directory test in.

Third, get all the file names under the current path

Get the data for a list, which is the name of all the folders and files under the current directory.

Iv. checking whether files and files are present

First introduced so many, relatively simple total is to be able to deepen their memories. There are also directories to delete, get the current environment, detach files, detach extensions, and so on, which are more commonly used.

A way to read a path and file on a file path in Python