Copy or move all files from a folder and subfolders to one source folder and don't overwrite duplicate files

copy_or_move_files_recursively_to_one_folder.py

import os
import shutil
import click


def copy_or_move_files_from_folder_to_folder(from_folder, to_folder, task='copy', recursive=True):
    for current_file in os.listdir(from_folder):
        path_to_source = os.path.join(from_folder, current_file)
        path_to_destination = os.path.join(to_folder, current_file)
        if os.path.isfile(path_to_source):
            if os.path.exists(path_to_destination):
                splitted_dest = path_to_destination.split('.')
                try:
                    last_number = int(splitted_dest[-2][-1])
                    if last_number < 9:
                        splitted_dest[-2] = splitted_dest[-2][:-1] + str(last_number + 1)
                    else:
                        splitted_dest[-2] += str(0)
                except ValueError:
                    splitted_dest[-2] += str(0)
                path_to_destination = '.'.join(splitted_dest)
            if task == 'copy':
                shutil.copyfile(path_to_source, path_to_destination)
            if task == 'move':
                shutil.move(path_to_source, path_to_destination)
        else:
            if recursive:
                copy_or_move_files_from_folder_to_folder(path_to_source, to_folder)


@click.command()
@click.option('--src', help='The source directory. (absolute path)')
@click.option('--dest', help='The destination directory. (absolute path)')
@click.option('--task', help='Move your files or copy? (move, copy)')
@click.option('--recursive', help='Move or copy recursive? (True, False) [standard: True]', )
def copy_or_move_files_to_one_dir(src, dest, task, recursive):
    """A programm that copies recursively files from folders and subfolders to one folder"""
    if not os.path.exists(src):
        click.echo('The given source path doesn\'t exist!', err=True)
    if not os.path.exists(dest):
        click.echo('The given destination path doesn\'t exist!', err=True)

    if not recursive:
        recursive = True

    if not task or task not in ['move', 'copy']:
        task = 'copy'

    copy_or_move_files_from_folder_to_folder(src, dest, task, recursive)


if __name__ == '__main__':
    copy_or_move_files_to_one_dir()