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Groups > comp.lang.python > #39772

Re: "The urlopen() and urlretrieve() functions can cause arbitrarily long delays"

References <9-GdnYm7wMIUz7fMnZ2dnUVZ8rydnZ2d@giganews.com>
From Ian Kelly <ian.g.kelly@gmail.com>
Date 2013-02-24 11:55 -0700
Subject Re: "The urlopen() and urlretrieve() functions can cause arbitrarily long delays"
Newsgroups comp.lang.python
Message-ID <mailman.2424.1361732152.2939.python-list@python.org> (permalink)

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On Sun, Feb 24, 2013 at 10:48 AM, 7segment <7segment@live.com> wrote:
> Hi!
>
> The subject is a segment of a sentence which I copied from Python's
> official homepage. In whole, it reads:
>
> "The urlopen() and urlretrieve() functions can cause arbitrarily long
> delays while waiting for a network connection to be set up. This means
> that it is difficult to build an interactive Web client using these
> functions without using threads."

I believe what this is warning about is that if a network connection
is not immediately available when the functions are called, they will
block while waiting for one rather than returning control to the
calling function.  If used in an interactive client without threads,
this would cause the application to appear to "hang" while urllib
waits for a response.  I don't think it's meant to suggest that urllib
is responsible for the delays; that sounds like a problem with your
network configuration.

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Thread

"The urlopen() and urlretrieve() functions can cause arbitrarily long delays" 7segment <7segment@live.com> - 2013-02-24 11:48 -0600
  Re: "The urlopen() and urlretrieve() functions can cause arbitrarily long delays" Ian Kelly <ian.g.kelly@gmail.com> - 2013-02-24 11:55 -0700
    Re: "The urlopen() and urlretrieve() functions can cause arbitrarily long delays" 7segment <7segment@live.com> - 2013-02-24 13:25 -0600
  Re: "The urlopen() and urlretrieve() functions can cause arbitrarily long delays" MRAB <python@mrabarnett.plus.com> - 2013-02-24 19:04 +0000
    Re: "The urlopen() and urlretrieve() functions can cause arbitrarily long delays" 7segment <7segment@live.com> - 2013-02-24 13:27 -0600
      Re: "The urlopen() and urlretrieve() functions can cause arbitrarily long delays" Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2013-02-24 22:30 +0100
  Re: "The urlopen() and urlretrieve() functions can cause arbitrarily long delays" rh <richard_hubbe11@lavabit.com> - 2013-02-24 14:46 -0800

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