def interact_database(command):
    connection = psycopg2.connect("dbname=NAME user=NAME password=PASSWORD")
    cursor = connection.cursor()

    cursor.execute(command)
    connection.commit()

    results = None
    try:
        results = cursor.fetchall()
    except psycopg2.ProgrammingError:
        print("Connection failure.")
        pass

    cursor.close()
    connection.close()

    return results


def pick_question(type):
    if type == 'G':
        QuestionID = random.randint(1,38)
    elif type == 'Gr':
        QuestionID = random.randint(39,60)
    elif type == 'R':
        QuestionID = random.randint(61,89)
    else:
        QuestionID = random.randint(90,119)
    interact_database("SELECT Question FROM Questions WHERE Question_ID = %s")(QuestionID)

pick_question('G')

psycopg2.ProgrammingError: syntax error at or near "%"
LINE 1: SELECT Question FROM Questions WHERE Question_ID = %s