def _on_entry_parsed(self, parser, uri, data, hints_list):
        hints = {'location': uri}

        for src_key, dst_key in (('title', 'title'), ('author', 'artist')):
            val = data[src_key]
            if val is not None:
                data[dst_key] = val

        hints_list.append(hints)

It appears that type(data) == <type 'gobject.GPointer'>. Which can not be used as a list.

From totem-pl-parser.h:

	/* signals */
	void (*entry_parsed) (TotemPlParser *parser,
			      const char *uri,
			      GHashTable *metadata);

So it looks like the GHashTable is not being converted into a dict-like object as Serpentine expects. Maybe this is a bug in pygtk?

	/**
	 * TotemPlParser::entry-parsed:
	 * @parser: the object which received the signal
	 * @uri: the URI of the entry parsed
	 * @metadata: a #GHashTable of metadata relating to the entry added
	 *
	 * The ::entry-parsed signal is emitted when a new entry is parsed.
	 */
	totem_pl_parser_table_signals[ENTRY_PARSED] =
		g_signal_new ("entry-parsed",
			      G_TYPE_FROM_CLASS (klass),
			      G_SIGNAL_RUN_LAST,
			      G_STRUCT_OFFSET (TotemPlParserClass, entry_parsed),
			      NULL, NULL,
			      totemplparser_marshal_VOID__STRING_POINTER,
			      G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_POINTER);

It is not possible to wrap this.  There is no runtime information that says the second signal parameter is a GHashTable*.  As far as pygobject knows, the parameter type is void*.

Not make this work, totem-plparser needs to register custom GType for the metadata parameter, and gnome-python-desktop needs to register a to-python conversion handler for that GType.

I don't know why is serpentine expecting a dict; surely this never worked before, so we can't say it's a regression.  Certainly it is not critical.

I fixed it by mapping into a python dict.  So, sorry but serpentine will have to adapt, I guess.

This problem has been fixed in the development version. The fix will be available in the next major software release. Thank you for your bug report.

(In reply to comment #4)
> I fixed it by mapping into a python dict.  So, sorry but serpentine will have
> to adapt, I guess.
> 
> This problem has been fixed in the development version. The fix will be
> available in the next major software release. Thank you for your bug report.
> 

Damn it! I wrote this code, but instead of committing it I must have accidentally reverted it and now can't find it anywhere :-(

gjc@dark-tower:gnome-python-desktop$ svn ci -m "[Bug 503343] Can't load playlist files"
Sending        ChangeLog
Sending        totem/plparsermodule.c
Transmitting file data ..
Committed revision 495.