Python os.walk() Method

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Description

The method walk() generates the file names in a directory tree by walking the tree either top-down or bottom-up.

Syntax

Following is the syntax for walk() method −

os.walk(top[, topdown=True[, onerror=None[, followlinks=False]]])

Parameters

top − Each directory rooted at directory, yields 3-tuples, i.e., (dirpath, dirnames, filenames)

topdown − If optional argument topdown is True or not specified, directories are scanned from top-down. If topdown is set to False, directories are scanned from bottom-up.

onerror − This can show error to continue with the walk, or raise the exception to abort the walk.

followlinks − This visits directories pointed to by symlinks, if set to true.

Return Value

This method does not return any value.

Example

The following example shows the usage of walk() method.

# !/usr/bin/python import os for root, dirs, files in os.walk(".", topdown=False): for name in files: print(os.path.join(root, name)) for name in dirs: print(os.path.join(root, name))

Let us compile and run the above program, this will scan all the directories and subdirectories bottom-to-up

./tmp/test.py ./.bash_logout ./amrood.tar.gz ./.emacs ./httpd.conf ./www.tar.gz ./mysql.tar.gz ./test.py ./.bashrc ./.bash_history ./.bash_profile ./tmp

If you will change the value of topdown to True, then it will give you the following result −

./.bash_logout ./amrood.tar.gz ./.emacs ./httpd.conf ./www.tar.gz ./mysql.tar.gz ./test.py ./.bashrc ./.bash_history ./.bash_profile ./tmp ./tmp/test.py

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