import os

def rename_files():
    directory = input("Path: ")

    if not os.path.isdir(directory):
        print("Could not find the path!")
        return

    prefix = input("Prefix: ")

    files = os.listdir(directory)

    for file in files:
        if os.path.isfile(os.path.join(directory, file)):
            file_name, extension = os.path.splitext(file)

            if not file_name.startswith(prefix):
                new_file_name = prefix + file_name + extension
                os.rename(os.path.join(directory, file), os.path.join(directory, new_file_name))

    print("Done!")

if __name__ == "__main__":
    rename_files()