CopyPercentageOfFiles.py

import os
import shutil
import random
import sys

def copy_random_files(input_dir, output_dir, percentage):
    if not os.path.exists(input_dir):
        print(f"Input directory does not exist: {input_dir}")
        sys.exit(1)

    if not os.path.exists(output_dir):
        os.makedirs(output_dir)

    all_files = [
        os.path.join(input_dir, f)
        for f in os.listdir(input_dir)
        if os.path.isfile(os.path.join(input_dir, f))
    ]

    if not all_files:
        print("No files found in input directory.")
        sys.exit(1)

    sample_size = max(1, int(len(all_files) * (percentage / 100.0)))
    selected_files = random.sample(all_files, sample_size)

    for file_path in selected_files:
        shutil.copy(file_path, output_dir)
        print(f"Copied: {file_path} -> {output_dir}")

if __name__ == "__main__":
    if len(sys.argv) != 4:
        print("Usage: python script.py <input_folder> <output_folder> <percentage>")
        sys.exit(1)

    input_folder = sys.argv[1]
    output_folder = sys.argv[2]
    try:
        percentage = float(sys.argv[3])
        if not (0 < percentage <= 100):
            raise ValueError()
    except ValueError:
        print("Percentage must be a number between 0 and 100.")
        sys.exit(1)

    copy_random_files(input_folder, output_folder, percentage)