Python : How to Get List of all empty Directories ?
In this article we will discuss how to get list of all empty directories.
Python’s os module provides a function to iterate over a directory tree i.e.
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os.walk(path) |
It iterates of the directory tree at give path and for each directory or sub directory it returns a tuple containing,
(<Dir Name> , <List of Sub Dirs> , <List of Files>.
Now let’s use this to create a list of empty directories in a directory tree.
Creating a list of all empty Directories in a directory tree
- Create a list to Store empty directories
- Now Traverse all the files in given path using os.walk() :
- For each Directory, check if it has no files and sub directories. If yes then add its path in the list.
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dirName = '/home/varun/temp'; ''' Get a list of empty directories in a directory tree ''' # Create a List listOfEmptyDirs = list() # Iterate over the directory tree and check if directory is empty. for (dirpath, dirnames, filenames) in os.walk(dirName): if len(dirnames) == 0 and len(filenames) == 0 : listOfEmptyDirs.append(dirpath) |
Creating a list of all empty Directories in a directory tree using List Comprehension
More pythonic approach is a single line solution using List Comprehension,
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listOfEmptyDirs = [dirpath for (dirpath, dirnames, filenames) in os.walk(dirName) if len(dirnames) == 0 and len(filenames) == 0] |
Complete example is as follows,
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import os def main(): dirName = '/home/varun/temp'; ''' Get a list of empty directories in a directory tree ''' # Create a List listOfEmptyDirs = list() # Iterate over the directory tree and check if directory is empty. for (dirpath, dirnames, filenames) in os.walk(dirName): if len(dirnames) == 0 and len(filenames) == 0 : listOfEmptyDirs.append(dirpath) # Iterate over the empty directories and print it for elem in listOfEmptyDirs: print(elem) print ("****************") listOfEmptyDirs = [dirpath for (dirpath, dirnames, filenames) in os.walk(dirName) if len(dirnames) == 0 and len(filenames) == 0] for elem in listOfEmptyDirs: print(elem) if __name__ == '__main__': main() |
Output:
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/home/varun/temp/temp1 /home/varun/temp/temp2 /home/varun/temp/temp3 **************** /home/varun/temp/temp1 /home/varun/temp/temp2 /home/varun/temp/temp3 |
Python Resources
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