Python 3 SQLite将数据插入表中（如果尚未存在）

Question

对于练习我正在建立一个数据库，用于搜索音乐评级网站，以提供专辑，艺术家和评级。

当我多次运行脚本时，如何防止在我的表中复制相同的数据？

from urllib.request import Request, urlopen
from bs4 import BeautifulSoup

import urllib.error
import sqlite3

conn = sqlite3.connect('pitchscraper.sqlite')
cur = conn.cursor()

#create table
cur.execute('''
CREATE TABLE IF NOT EXISTS Albums (id INTEGER, rating INTEGER, name TEXT, url TEXT, artist TEXT)''')

#open and read page
req = Request('http://pitchfork.com/reviews/albums/?page=1', headers={'User-Agent': 'Mozilla/5.0'})
pitchpage = urlopen(req).read()

#parse with beautiful soup
soup = BeautifulSoup(pitchpage, "lxml")
albums = soup('h2')
artists = soup.find_all(attrs={"class" : "artist-list"})

print("ALBUMS")
for tag in albums:
    for album in tag:
        print(album)
        # need to fix this so that duplicate code is not added
        cur.execute('INSERT OR IGNORE INTO Albums (name) VALUES (?)', (album, ))