Python Standard library-os

Common methods of OS modules

Module Method	Description
OS.GETCWD ()	Gets the current working directory, which is the directory path of the current Python script work
Os.chdir ("DirName")	Change the current script working directory, equivalent to the shell CD
Os.curdir	Return to current directory: ('. ')
Os.pardir	Gets the parent directory string name of the current directory: (' ... ')
Os.makedirs (' dirname1/dirname2 ')	Multi-level recursive catalogs can be generated
Os.removedirs (' dirname1 ')	If the directory is empty, it is deleted and recursively to the previous level of the directory, if it is also empty, then delete, and so on
Os.mkdir (' dirname ')	Generate a single-level directory, equivalent to the shell mkdir dirname
Os.rmdir (' dirname ')	Delete single-level empty directory, if the directory is not empty can not be deleted, error; equivalent to the shell rmdir dirname
Os.listdir (' dirname ')	Lists all files and subdirectories under the specified directory, including hidden files, and prints as a list
Os.remove ()	Delete a file
Os.rename ("Oldname", "NewName")	Renaming files/Directories
Os.stat (' Path/filename ')	Get File/directory information
Os.sep	Output operating system-specific path delimiter, win under \\ , Linux for/
Os.linesep	Output the line terminator used by the current platform, win under \t\n , Linux for\n
Os.pathsep	Output a string used to split a file path
Os.name	The output string indicates the current usage platform. Win-> nt ; Linux->posix
Os.system ("Bash command")	Run the shell command to display directly
Os.environ	Get System Environment variables
Os.path.abspath (PATH)	Returns the absolute path normalized by path
Os.path.split (PATH)	Split path into directory and file name two tuples returned
Os.path.dirname (PATH)	Returns the directory of path. is actually the first element of Os.path.split (path)
Os.path.basename (PATH)	Returns the last file name of path. A ／ \ null value is returned if the path is or ends. The second element of Os.path.split (path)
Os.path.exists (PATH)	Returns true if path exists, false if path does not exist
Os.path.isabs (PATH)	Returns true if path is an absolute path
Os.path.isfile (PATH)	Returns true if path is a file that exists. otherwise returns false
Os.path.isdir (PATH)	Returns true if path is a directory that exists. otherwise returns false
Os.path.join (path1[, path2[,...]])	When multiple paths are combined, the parameters before the first absolute path are ignored
Os.path.getatime (PATH)	Returns the last access time of the file or directory to which path is pointing
Os.path.getmtime (PATH)	Returns the last modified time of the file or directory to which path is pointing

Python Standard library-os