获取Url时的UnicodeDecodeError

Question

我对python 2.7非常陌生，并使用urilib2从URL读取数据并写入正常的txt文件，

webPage = urllib2.urlopen('https://www.somewebsite.com').read()
soup = BeautifulSoup(webPage)
urlData= open("urlData.txt","a+")
div  = soup.find("div",{"class":"imgMrgnTopLG imgMrgnBtmLG listBullet"})

for row in div.findAll('ul'): 
        for li in row.findAll('li'):
             if any( ext in li.text.encode('utf-8') for ext in keys):
                    urlData.write(li.text.encode('utf-8')+"\n")  

执行上述代码后，我遇到此错误，我已尝试过以前的解决方案，但无法修复。请帮帮我，谢谢你。

UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 5: ordinal not in range(128)