os.listdir(): Get all the directories and files in the specified directory and store them in the list
os.rmdir(): Delete an empty directory, an error will be reported if there are files in the directory.
os.mkdir(): Creates a new directory.
os.getcwd(): Get the current working directory.
os.path.basename(): Returns the filename.
os.path.dirname(script_path) : The directory path corresponding to this Python file
os.path.exists(): Determines whether the path exists, returns True if it exists, and returns False if it does not exist.
os.path.join(path, paths) : Can be used to join two directories or a directory and a file
os.system(commend): Basic in os, executed on command line
os.path.split(): Split filename from path by path
os.envison():
