FLV download script works, but I want to enhance it

Aahz aahz at pythoncraft.com
Sun May 10 15:30:40 EDT 2009

In article <mailman.5307.1241805968.11746.python-list at python.org>,
The Music Guy  <musicguy at alphaios.net> wrote:
>On Thu, May 7, 2009 at 9:29 AM, Aahz <aahz at pythoncraft.com> wrote:
>> Here's my download script to get you started figuring this out, it does
>> the wget in the background so that several downloads can run in parallel
>> from a single terminal window:
>> #!/bin/bash
>> echo "Downloading $1"
>> wget "$1" > /dev/null 2>&1 &
>Thanks for the reply, but unfortunately that script is going in the
>complete wrong direction.

Not really; my point was that you could use something similar to process
files after downloading.

>Firstly, downloading multiple files in tandem does not speed up the
>process as it merely cuts up the already limited bandwidth into even
>smaller pieces and delays every download in progress. It is much
>better to queue downloads to occur one-by-one.
>Secondly, that approach is based on bash rather than Python. I know I
>could use the `&` operator on a command line to background processes,
>but I would like to be able to have more control through Python and
>the use of the subprocess or threading modules.

Threading probably won't get you anywhere; I bet processing the files is
CPU-intensive.  I suggest looking into the multiprocessing module, which
would then run the file processing.
Aahz (aahz at pythoncraft.com)           <*>         http://www.pythoncraft.com/

"It is easier to optimize correct code than to correct optimized code."
--Bill Harlan

More information about the Python-list mailing list