How to use os.listdir() function In Python
os.listdir() method in Python is used to get the list of all files and directories in the specified directory. If we don’t specify any directory, then a list of files and directories in the current working directory will be returned.
Syntax: os.listdir(path)
Parameters: path (optional) : path of the directory
Return: This method returns the list of all files and directories in the specified path. The return type of this method is list.
In this method, we will create a list of filenames in a folder sorted by file size. We will pass lambda x: os.stat(os.path.join(dir_name, x)).st_size as the key argument to the sorted() function which will sort the files in directory by size.
Python3
import os name_of_dir = 'dir_path' # Storing list of all files # in the given directory in list_of_files list_of_files = filter( lambda x: os.path.isfile (os.path.join(name_of_dir, x)), os.listdir(dir_name) ) # Sort list of file names by size list_of_files = sorted( list_of_files, key = lambda x: os.stat (os.path.join(name_of_dir, x)).st_size) # Iterate over sorted list of file # names and print them along with size one by one for name_of_file in list_of_files: path_of_file = os.path.join(name_of_dir, name_of_file) size_of_file = os.stat(path_of_file).st_size print(size_of_file, ' -->', name_of_file) |
Output:
366 --> descript.ion 1688 --> readme.txt 3990 --> License.txt 15360 --> Uninstall.exe 48844 --> History.txt 50688 --> 7-zip32.dll 78336 --> 7-zip.dll 108074 --> 7-zip.chm 186880 --> 7zCon.sfx 205824 --> 7z.sfx 468992 --> 7z.exe 581632 --> 7zG.exe 867840 --> 7zFM.exe 1679360 --> 7z.dll
Python – Get list of files in directory sorted by size
In this article, we will be looking at the different approaches to get the list of the files in the given directory in the sorted order of size in the Python programming language.
The two different approaches to get the list of files in a directory are sorted by size is as follows:
- Using os.listdir() function
- Using glob() functions