Copy files with extensions nested in path

nested_extension_copier.py

"""
Nested Extension Copier: A Python script to recursively copy files with specified extensions 
from a source directory to a destination directory. It accepts multiple extensions as command-line 
arguments, allowing for flexible and targeted file copying. Ideal for organizing files or selective backups.
"""

import os
import shutil
import sys

def copy_specific_files(src_path, dest_path, extensions):
    if not os.path.exists(dest_path):
        os.makedirs(dest_path)

    for root, dirs, files in os.walk(src_path):
        for file in files:
            if os.path.splitext(file)[1].lower() in extensions:
                shutil.copy2(os.path.join(root, file), dest_path)

def main():
    if len(sys.argv) < 4:
        print("Usage: python nested_extension_copier.py [source_path] [destination_path] [extensions...]")
        return

    src_path = sys.argv[1]
    dest_path = sys.argv[2]
    extensions = set(sys.argv[3:])
    
    copy_specific_files(src_path, dest_path, extensions)
    print(f"Files copied from {src_path} to {dest_path}")

if __name__ == "__main__":
    main()