13.1.1. OS Module Basics#

import os

13.1.1.1. Get current working directory#

os.getcwd() # Most important command

'/Users/sahilchoudhary/Desktop/Projects/Digital Ebook/Draft-Codes-main/Chapter files'

13.1.1.2. List the files and folders of current directory#

os.listdir()[0:5]

['Licenses.ipynb',
 'Zip.ipynb',
 'Any() vs All()-Copy1.ipynb',
 'Untitled7.ipynb',
 'DEBUGGING TITLE.ipynb']

13.1.1.3. Changing the working directory#

os.chdir('C:\\users\\Sahil Choudhary\\Desktop') # Most important command

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
Input In [4], in <cell line: 1>()
----> 1 os.chdir('C:\\users\\Sahil Choudhary\\Desktop')

FileNotFoundError: [Errno 2] No such file or directory: 'C:\\users\\Sahil Choudhary\\Desktop'

13.1.1.4. List the files and folders of particular directory#

os.listdir("C:\\Users\\Sahil Choudhary\\Documents\\Test folder\\Parent folder")

['Parent file outside.txt', 'Sub folder 1', 'Sub folder 2']

os.listdir() #_static
os.chdir("_static")

os.getcwd()

'C:\\Users\\Sahil Choudhary\\Book\\Python\\_build\\html\\_static'

13.1.1.5. Making a new directory#

os.mkdir('Test')

13.1.1.6. OS.walk#

13.1.1.6.1. Get file names and folder names and the files present in subfolders all in one go#

'g'

path='C:\\Users\\Sahil Choudhary\\Documents\\Test folder\\Parent folder'
for root_path,sub_directories,files in os.walk(path):  
    # os.walk(path) gives 3 things
        # parent directory
        # subdirectory
        # files
    print('Parent folder = ',root_path.split('\\')[-1])
    print('Sub directories = ',sub_directories)
    print('Files = ',files)
    print('---------')

Parent folder =  Parent folder
Sub directories =  ['Sub folder 1', 'Sub folder 2']
Files =  ['Parent file outside.txt']
---------
Parent folder =  Sub folder 1
Sub directories =  []
Files =  ['sub folder 1 file.txt']
---------
Parent folder =  Sub folder 2
Sub directories =  ['sub sub folder 2']
Files =  ['sub folder 2 file.txt']
---------
Parent folder =  sub sub folder 2
Sub directories =  []
Files =  ['sub sub folder 2 file.txt']
---------