OS module in python

The OS module provides a big range of useful method to manipulate files and directories. Some of the useful and commonly used methods are:

• os.access(path,mode): use to check the access to path. It returns true if access is allowed and False if not allowed. Where modes could one of these:
1. os.F_OK: to test existence of path
2. os.R_OK: to test readability access to path
3. os.W_OK: to test writ-ability access to path
4. os.X_OK: to test if path can be executed or not. 


• os.cwd(): return the current working directory


• os.chdir(path): changes the current working directory to the given path. It returns none in all the cases.


• os.mkdir(dir_name): creates a directory inside the current working directory with the name passed as argument inside parenthesis.


• os.mkdirs(folder1/folder2...): it is used when we want to create a tree structure of the directories inside our current working directories.


• os.rmdir(dir_name): removes the directory passed in as argument.


• os.removedirs(folder1/folder2...): this comes in use when we are about to remove a tree structure of folders(directories).


• os.rename(old_name,to_name): use to rename the files and folders


• os.stat(arg): provide th e details about file or folder passed as arguments.


• os.walk(root_directory): retrieves the tree structure inside root_directoory. It fetch value in three sequence:
1. dir_path: which is the path of the directory
2. Name_Of_the_Directory
3. Files or folders inside that directory


•  os.path.split(address): returns the last name of file or folder in the address


• os.path.splitext(file_name): returns the extension of file.