对于这种特殊情况，BeautifulSoup比正则表达式更难编写，但是它更健壮…我只是为BeautifulSoup示例提供帮助，因为您已经知道要使用哪个正则表达式:-)

from BeautifulSoup import BeautifulSoup

#Or retrieve it from the web, etc. 
html_data = open('/yourwebsite/page.html','r').read()

#Create the soup object from the HTML data
soup = BeautifulSoup(html_data)
fooId = soup.find('input',name='fooId',type='hidden') #Find the proper tag
value = fooId.attrs[2][1] #The value of the third attribute of the desired tag 
                          #or index it directly via fooId['value']