使用 BeautifulSoup 将数据从 dataframe 中抓取到 dataframe 中

问：

我正在做一个项目，将加州彩票中的数据抓取并解析成一个dataframe

这是我到目前为止的代码，它没有产生错误，也没有输出：

import requests
from bs4 import BeautifulSoup as bs4

draw = 'http://www.calottery.com/play/draw-games/superlotto-plus/winning-numbers/?page=1'
page = requests.get(draw) 
soup = bs4(page.text)

drawing_list = []

for table_row in soup.select("table.tag_even_numbers tr"):
    cells = table_row.findAll('td')

    if len(cells) > 0:
        draw_date = cells[0].text.strip()
        numbers = cells[1].text.strip()
        mega = cells[2].text.strip()

        drawings = {'dates': draw_date, 'winning_numbers': numbers, 'mega_number': mega}
        drawing_list.append(drawings)
        print "added {0} {1} {2}, to the list".format(draw_date, numbers, mega)

预期输出：我很想把表格行刮成dataframe

draw_date  | numbers        | mega
-----------|----------------|-----
12/06/2017 | 12 24 07 01 02 | 23
12/02/2017 | 33 18 07 42 40 | 7

感谢您对正确方向的任何修改或帮助。