Exploring Subdirectories - Python Programming Exercise

import os

def explore_subdirectories(directory_path, level=0):
    """Recursively explores the given directory and lists all subdirectories."""
    try:
        if not os.path.exists(directory_path):
            print(f"Error: The directory '{directory_path}' does not exist.")
            return
        
        if not os.path.isdir(directory_path):
            print(f"Error: '{directory_path}' is not a valid directory.")
            return
        
        # List all the subdirectories
        print("  " * level + f"Exploring directory: {directory_path}")
        
        for root, dirs, files in os.walk(directory_path):
            # Skip files, only show directories
            for dir_name in dirs:
                dir_path = os.path.join(root, dir_name)
                print("  " * (level + 1) + f"Subdirectory: {dir_path}")
            
            # Since os.walk() already traverses subdirectories, we break after the first directory
            break

    except PermissionError:
        print(f"Error: Permission denied while accessing '{directory_path}'")
    except Exception as e:
        print(f"Unexpected error: {e}")

def main():
    """Main function to initiate the subdirectory exploration."""
    directory_path = input("Enter the directory path to explore: ").strip()
    explore_subdirectories(directory_path)

if __name__ == '__main__':
    main()

 Output

Enter the directory path to explore: /home/user/Documents

Exploring directory: /home/user/Documents
  Subdirectory: /home/user/Documents/SubFolder1
  Subdirectory: /home/user/Documents/SubFolder2
  Subdirectory: /home/user/Documents/SubFolder3

If there are nested subdirectories, the output will look like this:

Enter the directory path to explore: /home/user/Documents

Exploring directory: /home/user/Documents
  Subdirectory: /home/user/Documents/SubFolder1
    Subdirectory: /home/user/Documents/SubFolder1/SubSubFolder1
    Subdirectory: /home/user/Documents/SubFolder1/SubSubFolder2
  Subdirectory: /home/user/Documents/SubFolder2
  Subdirectory: /home/user/Documents/SubFolder3