def file_reader(file_path, file_name):
    """
    Reads from a file.
    :param file_path: str the path to the file.
    :param file_name: str the name of the file.
    :return: list of lines or None if no file exists.
    """
    file_content = []
    try:
        with open(file_path + file_name, mode='r') as f:
            for line in f:
                file_content.append(line.rstrip('\n'))
            return file_content
    except IOError:
        return None