Python Recursively Remove Empty Directories

remove_empty_folders.py

#! /usr/bin/env python
'''
Module to remove empty folders recursively. Can be used as standalone script or be imported into existing script.
'''

import os, sys

def removeEmptyFolders(path, removeRoot=True):
  'Function to remove empty folders'
  if not os.path.isdir(path):
    return

  # remove empty subfolders
  files = os.listdir(path)
  if len(files):
    for f in files:
      fullpath = os.path.join(path, f)
      if os.path.isdir(fullpath):
        removeEmptyFolders(fullpath)

  # if folder empty, delete it
  files = os.listdir(path)
  if len(files) == 0 and removeRoot:
    print "Removing empty folder:", path
    os.rmdir(path)
    
def usageString():
  'Return usage string to be output in error cases'
  return 'Usage: %s directory [removeRoot]' % sys.argv[0]

if __name__ == "__main__":
  removeRoot = True
  
  if len(sys.argv) < 1:
    print "Not enough arguments"
    sys.exit(usageString())
    
  if not os.path.isdir(sys.argv[1]):
    print "No such directory %s" % sys.argv[1]
    sys.exit(usageString())
    
  if len(sys.argv) == 2 and sys.argv[2] != "False":
    print "removeRoot must be 'False' or not set"
    sys.exit(usageString())
  else:
    removeRoot = False
    
  removeEmptyFolders(sys.argv[1], removeRoot)

what is removeRoot used for?

what is removeRoot used for?

It ought to been removed, I guess.

This accomplishes basically the same thing with 6 lines: https://gist.github.com/roddds/aff960f47d4d1dffba2235cc34cb45fb

This accomplishes basically the same thing with 6 lines: https://gist.github.com/roddds/aff960f47d4d1dffba2235cc34cb45fb

I think the one with 6 lines is not Recursively deleting the empty folders. if you have:

.
├── 43
│   └── 2019-06-17
│       ├── 0
│       └── 1
├── 44
│   └── 2019-06-17
│       ├── 0
│       ├── 1
│       ├── 2
│       └── 3
├── 45
│   └── 2019-06-17
│       ├── 0
│       ├── 1
│       └── 2
└── 46
    └── 2019-06-17
        └── 0

such that all folders with len(name) == 1 are empty. This code would delete them all but the 6-line version only deletes ones with len(name) == 1

Pass a pathlib.Path instance to the function below:

def remove_empty_directories(pathlib_root_dir):
  # list all directories recursively and sort them by path,
  # longest first
  L = sorted(
      pathlib_root_dir.glob("**"),
      key=lambda p: len(str(p)),
      reverse=True,
  )
  for pdir in L:
    try:
      pdir.rmdir()  # remove directory if empty
    except OSError:
      continue  # catch and continue if non-empty

Here, you found the folders... after that... use rmtree in a loop. :)

    empty_underlyings_path = [f.path
                              for f in os.scandir(self.__config.get_model_path())
                              if f.is_dir() and not os.listdir(f.path)]

danke!