Jon Smith wrote:
I've been using Appscript and have been incredibly happy with it.
However
I'm having a ton of problems getting the list of tracks from my
library. I
was assuming the problem was with my library/iTunes itself however I
can get
the track list with ScriptingBridge. Am I doing something wrong? Why
would
ScriptingBridge work and AppScript Timeout? Any ideas.
#!/usr/bin/env python
from ScriptingBridge import *
from appscript import *
def main(argv=None):
itunes =
SBApplication.applicationWithBundleIdentifier_("com.apple.iTunes")
lib = itunes.sources()[0].playlists()[0]
tracks = lib.tracks()
print len(tracks)
tracks2 =
app(u'/Applications/
iTunes.app').library_playlists['Library'].file_tracks.get()
print len(tracks2)
Your SB and appscript examples are actually doing very different
things [1]. The SB code is sending a 'count' event to iTunes and
getting back an integer indicating the number of tracks in the
playlist. The appscript code is sending a 'get' event and getting back
a list of references to the tracks in that playlist.
Here's some direct comparisons of counting vs. getting (I've
normalised everything else for clarity):
- counting tracks in SB and appscript:
itunes =
SBApplication.applicationWithBundleIdentifier_("com.apple.iTunes")
lib = itunes.sources()[0].playlists()[0]
tracks_ref = lib.tracks()
print len(tracks_ref)
itunes = app(id='com.apple.iTunes')
lib = itunes.sources[1].playlists[1]
tracks_ref = lib.tracks
print tracks_ref.count(each=k.item)
- getting tracks in SB and appscript:
itunes =
SBApplication.applicationWithBundleIdentifier_("com.apple.iTunes")
lib = itunes.sources()[0].playlists()[0]
tracks_list = lib.tracks().get()
print tracks_list
itunes = app(id='com.apple.iTunes')
lib = itunes.sources[1].playlists[1]
tracks_list = lib.tracks.get()
print tracks_list
Anyway, I'm guessing you've a very large playlist and by the time
iTunes has constructed a list of references to every track in it your
'get' event has timed out. To increase the timeout duration in
appscript, include a 'timeout' argument in the 'get' command, e.g.:
itunes = app(id='com.apple.iTunes')
lib = itunes.sources[1].playlists[1]
tracks_list = lib.tracks.get(timeout=600) # 10 minute timeout
print tracks_list
HTH
has
[1] It's an easy mistake though to make as SB obfuscates its internal
workings even more than AppleScript. Despite the misleading name,
SBElementArray is *not* a real array at all, and creating one does not
automatically send a 'get' event to the target application to obtain a
list of references (you have to invoke its -get method for that).
--
Control AppleScriptable applications from Python, Ruby and ObjC:
http://appscript.sourceforge.net
_______________________________________________
Pythonmac-SIG maillist - Pythonmac-SIG@python.org
http://mail.python.org/mailman/listinfo/pythonmac-sig
