Python: Iterate over a root level path and print all its sub-directories and files
Python Operating System Services: Exercise-11 with Solution
Write a Python program to iterate over a root level path and print all its sub-directories and files, also loop over specified dirs and files.
Sample Solution:
Python Code :
import os
print('Iterate over a root level path:')
path = '/tmp/'
for root, dirs, files in os.walk(path):
print(root)
Sample Output:
Iterate over a root level path: /tmp/
Python Code :
import os
print('Loop over dirs and files:')
path = '/tmp/'
for root, dirs, files in os.walk(path):
print(root)
for _dir in dirs:
print(_dir)
for _file in files:
print(_file)
Output:
Loop over dirs and files: /tmp/ 0001.png 0002.png 0003.png 0004.png 0005.png 0006.png 0007.png 0008.png 0009.png 0010.png ..... 0037.png 0038.png 0039.png 0040.png 0041.png 0042.png 0043.png 0044.png 123.npy 123.npz
Python Code Editor:
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Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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