Podcast catcher in Python

Chuck galois271 at gmail.com
Sat Sep 12 04:43:55 CEST 2009


On Sep 11, 9:07 pm, Chuck <galois... at gmail.com> wrote:
> On Sep 11, 8:32 pm, Chris Rebert <c... at rebertia.com> wrote:
>
>
>
>
>
> > On Fri, Sep 11, 2009 at 11:09 AM, Chuck <galois... at gmail.com> wrote:
> > > On Sep 11, 12:56 pm, Chuck <galois... at gmail.com> wrote:
> > >> On Sep 11, 10:30 am, Falcolas <garri... at gmail.com> wrote:
> > >> > On Sep 11, 8:20 am, Chuck <galois... at gmail.com> wrote:
>
> > >> > > Hi all,
>
> > >> > > I would like to code a simple podcast catcher in Python merely as an
> > >> > > exercise in internet programming.  I am a CS student and new to
> > >> > > Python, but understand Java fairly well.  I understand how to connect
> > >> > > to a server with urlopen, but then I don't understand how to download
> > >> > > the mp3, or whatever, podcast?  Do I need to somehow parse the XML
> > >> > > document?  I really don't know.  Any ideas?
>
> > >> > > Thanks!
>
> > >> > > Chuck
>
> > >> > You will first have to download the RSS XML file, then parse that file
> > >> > for the URL for the audio file itself. Something like eTree will help
> > >> > immensely in this part. You'll also have to keep track of what you've
> > >> > already downloaded.
>
> > >> > I'd recommend taking a look at the RSS XML yourself, so you know what
> > >> > it is you have to parse out, and where to find it. From there, it
> > >> > should be fairly easy to come up with the proper query to pull it
> > >> > automatically out of the XML.
>
> > >> > As a kindness to the provider, I would recommend a fairly lengthy
> > >> > sleep between GETs, particularly if you want to scrape their back
> > >> > catalog.
>
> > >> > Unfortunately, I no longer have the script I created to do just such a
> > >> > thing in the past, but the process is rather straightforward, once you
> > >> > know where to look.
>
> > > I am not sure how eTree fits in.  Is that eTree.org?
>
> > No, he's referring to the `xml.etree.elementtree` standard module:http://docs.python.org/library/xml.etree.elementtree.html#module-xml....
>
> > Although since you're dealing with feeds, you might be able to use
> > Universal Feed Parser, which is specifically for RSS/Atom:http://www.feedparser.org/
>
> > Cheers,
> > Chris
> > --http://blog.rebertia.com
>
> Brilliant!  I will give that a try.
> Cheers!

Does anyone know how I should read/download the mp3 file, and how I
should write/save it so that I can play it on a media player such as
Windoze media player?  Excuse my ignorance, but I am a complete noob
at this.  I downloaded the mp3, and I got a ton of hex, I think, but
it could've been unicode.



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