urgent help

[ismahameed at gcuf.edu.pk]

this is the error in the following python code, can any one help me
error{Traceback (most recent call last):
  File "C:\Python27\Scripts\BeOk\getBeOKExperts.py", line 6, in <module>
    from BeautifulSoup import BeautifulSoup
ImportError: No module named BeautifulSoup} 



"#encoding=utf8
from codecs import open
from collections import defaultdict
import re

from BeautifulSoup import BeautifulSoup
import mechanize
import cookielib
import html2text
import time


def getbr():
    br = mechanize.Browser()

    # Cookie Jar
    cj = cookielib.LWPCookieJar()
    br.set_cookiejar(cj)

    # Browser options
    br.set_handle_equiv(True)
    br.set_handle_gzip(True)
    br.set_handle_redirect(True)
    br.set_handle_referer(True)
    br.set_handle_robots(False)

    # Follows refresh 0 but not hangs on refresh > 0
    br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1)

    # User-Agent (this is cheating, ok?)
    br.addheaders = [('User-agent', 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.1) Gecko/2008071615 Fedora/3.0.1-1.fc9 Firefox/3.0.1')]
    return br

def logthis(text):
    open("log.txt","a","utf8").write(text+"\n")

def getCommunity(community,url,out=""):
    # Browser
    
    # The site we will navigate into, handling it's session
    i = 1
    
    flag = True
    discussions = []
    baseDiscussion = []
    
    while flag:
        print i
        currurl = url+"/"+str(i)
        try:
            br = getbr()
            br.open(currurl)
            #br.follow_link(text='link')
            html = br.response().read()
            soup = BeautifulSoup(html)
            if soup.find("title").string == u'\r\n\t\u05d4\u05d5\u05d3\u05e2\u05ea \u05de\u05e2\u05e8\u05db\u05ea - BeOK\r\n':
                print "done at ",i,community
                logthis("done at "+str(i)+" "+community)
                return True
            hrefList = soup.findAll('div',{"class":"MsgTtlChildRow"})
            print currurl
            #print hrefList
            for link in hrefList:
                #print str(link)
                #continue
                span = link.find('div',{"class":"MsgUsr"})
                
                if "frm_mngr" in str(span):
                    mgr = span.find("span",{"class":"frm_mngr"}).string
                    if not "''" in mgr:
                        continue
                    mgr = mgr.replace("'","")
                    date =  link.find('span',{"class":"MsgDate"}).string.split(" ")[1]
                    #out.write(community+"\t"+mgr+"\t"+date+"\n")
                    print community.rstrip(),date,mgr
                    #fout = open("corpus\\"+community+"-"+date+"-"+mgr,"w","utf8")
                    ansDiv = link.nextSibling.find('div',{"class":"BodyMesInner"})
                    print "bla"
                    ans = fixHtml2(str(ansDiv))
                    print "bla"
                    print ans
                    #fout.write(fixHtml(link.find('div',{"class":"BodyMesInner"}).string)+"\n")
                    #fout.close()
                    questionDiv = link.previousSibling.find('div',{"class":"BodyMesInner"})
                    print "bla",questionDiv
                    quesiton = fixHtml2(str(questionDiv))
                    print question
                span = None
                
                
            
            soup = None
            br = None
        except:
            
            time.sleep(60)
        i+=1
    return list(set(discussions))
    
def fixHtml(page):
    page = page.replace("</p>","\n")
    page = page.replace("</P>","\n")
    page = page.replace("<br />","\n")
    page = page.replace("<BR />","\n")
    page = page.replace("<br>","\n")
    page = page.replace("<BR>","\n")
    page = page.replace(""","'")
    reg = re.compile("<")
    reg2 = re.compile(">")
    page = " ".join([x[-1] for x in map(reg2.split,reg.split(page))])
    page = page.replace("\r\n\t\t\t","\n")
    return page

def fixHtml2(page):
    page = page.split('ner">')[1].split("<div")[0]
    print page
    page = page.replace("</p>","\n")
    page = page.replace("</P>","\n")
    page = page.replace("<br />","\n")
    page = page.replace("<BR />","\n")
    page = page.replace("<br>","\n")
    page = page.replace("<BR>","\n")
    page = page.replace(""","'")
    return page
        
def getText(br,url):
    br.open(url)
    html = br.response().read()
    soup = BeautifulSoup(html)
    title = fixHtml(soup.find('h1',{'class':"articleName"}).contents[0])
    #print title
    artics = soup.findAll('div',{'class':"article"})
    text = "\n"+fixHtml(str(artics[0]).split('"article">')[1].split('</div>')[0])
    text += "\n<EXPERT>"+ fixHtml(str(artics[1]).split('"article">')[1].split('</div>')[0])+"</EXPERT>"
    text = text.decode("utf-8")
    #text = artics[0] +
    #print type(title),type(text)
    
    return title+text    

def getForums(file = "links.htm"):
    #out = open("beokDates","w","utf8")
    soup = BeautifulSoup(open(file,"r").read())
    communities = soup.findAll("a",{"class":"MainList"})
    for comm in communities:
        #print comm["href"]
        getCommunity(comm.string,comm["href"])
        
getForums()    
#links = getQALinks()
file = "links.htm"
soup = BeautifulSoup(open(file,"r").read())
comm = soup.findAll("a",{"class":"MainList"})[0]
br = getbr()
currurl = comm["href"]+"/3"
br.open(currurl)
html = br.response().read()
soup = BeautifulSoup(html)
hrefList = soup.findAll('div',{"class":"MsgTtlChildRow"})[0]
"