只需对 titleSoup

>>> titleSoup=firstBlockSoup.find('a',attrs={'class':'fk-srch-title-text fksd-bodytext'})
>>> titleSoup.text
u'Wilco Classic Library: Autobiography Of a Yogi (Hardcover)'

这也将起作用:

invalid_tags = ['b']
titleSoup=firstBlockSoup.find('a',attrs={'class':'fk-srch-title-text fksd-bodytext'})

for tag in invalid_tags: 
    for match in titleSoup.findAll(tag):
       match.replaceWithChildren()
print "".join(titleSoup.contents)