How to Prune Empty Directories in Python with os.walk

import os

def prune_empty_dirs(root):
    """Remove all empty subdirectories under root, bottom-up."""
    for dirpath, dirnames, filenames in os.walk(root, topdown=False):
        if dirpath == root:
            continue
        try:
            os.rmdir(dirpath)
            print(f"Removed: {dirpath}")
        except OSError:
            pass  # Directory not empty or permission issue

if __name__ == "__main__":
    # Create temporary test structure
    base = "sample_tree"
    os.makedirs(os.path.join(base, "empty1", "nested_empty"), exist_ok=True)
    os.makedirs(os.path.join(base, "empty2"), exist_ok=True)
    os.makedirs(os.path.join(base, "full", "sub"), exist_ok=True)
    with open(os.path.join(base, "full", "sub", "file.txt"), "w") as f:
        f.write("keep me")

    print("Before pruning:")
    for root, dirs, files in os.walk(base):
        print(f"  {root}")

    prune_empty_dirs(base)

    print("\nAfter pruning:")
    for root, dirs, files in os.walk(base):
        print(f"  {root}")