获取href标记中的链接

Question

如何获取href标签中的链接？我如何编码它似乎整个＆＃39; a＆＃39;标签... 代码：

page = urllib2.urlopen('https://www.meetup.com/')
soup = BeautifulSoup(page, 'lxml')

categories = soup.find('ul', class_='gridList')

A = []
B = []

for category in categories.findAll('li'):
    text = category.findAll('h4')
    if len(text) != 0:
        A.append(text[0].find(text = True))

for link in categories.findAll('li'):
    url = link.findAll('a', href=True)
    if len(url) != 0:
        B.append(url)

Answer 1

...
(your code above)    
for link in categories.findAll('li'):
    url = link.find('a', href=True)
    if len(url) != 0:
        B.append(url['href'])