how to judge urllib.Request is finished?

[Marc 'BlackJack' Rintsch]

On Tue, 01 Jul 2008 15:16:03 +0800, oyster wrote:

> currently I am using
> [code]
> req=urllib2.Request(url)
> data=''
> if '</htm>' not in data:
>         fd=urllib2.urlopen(req)
>         data=fd.read()
>         time.sleep(10)
> time.sleep(10)
> blahblah
> [/code]

That looks very strange.  Why the ``if`` and the `sleep()`\s?  The ``if``
condition is always true, so it's completely unnecessary.  The `read()`
call is blocking, that means it returns iff the complete data is read.  So
there's no need to wait or to check if all is read.  If there's a problem
with the connection an exception should be raised by `urllib2`.

Ciao,
	Marc 'BlackJack' Rintsch