[Pythonmac-SIG] Re: urllib and ftplib hang in bundle but not when run directly

[Russell E Owen]

At 11:14 PM +0200 2004-05-15, Jack Jansen wrote:
>...
>My gut feeling is that it's not the import lock that is the problem: something
>as fundamental as the import lock being in a different state in a 
>bundlebuilder
>application (as compared to a normal script run) would have show up much
>sooner. I did a quick test and it seems the import lock isn't held, 
>indeed (in an
>application created with the stock 2.3 bundlebuilder).

I agree, especially as simply compiling the regular expression can 
cause the same problem.

>My next guess would be that the bundled application somehow holds
>a lock that is internal to re, but a quick look at re (and _sre) revealed no
>such lock, especially given your assertion that things go wrong at import
>time. Also, I can't imagine why a bundlebuilder app would hold such
>a lock while a normal script wouldn't.
>
>Still, I'd like to debug this, as errors such as this are really nasty.
>Could you try to attach gdb to the process as it is hanging, and see whether
>you can find out what lock (if any) you are hanging on?

I'll gladly have a go at that. not having used gdb before I'm 
wondering if anyone can suggest a tutorial or recipe.

>Also, there are now quite a few things called bundlebuilder or variations
>on it. Which one are you using? With what options?

I am using the bundlebuilder that came with Panther's built-in Mac 
Python 2.3. Here's the basic call (the build script has additional 
code to handle the fact that I mix some data files, e.g. sounds and 
html help, in with my modules, but this just copies files into the 
bundle):

inclPkgs = ["RO", "TUI"]
libs = [
	"/Library/Frameworks/Tcl.framework",
	"/Library/Frameworks/Tk.framework",
]
resources = [tuiDir]
bundlebuilder.buildapp(
	name = appName,		 		# application name
	builddir  =  ".",			# dir for application
	mainprogram = mainProg,		# your app's main()
	argv_emulation = False,		# drag&dropped filenames show 
up in sys.argv?
	iconfile = 'TUI.icns',		# file containing your app's icons
	semi_standalone = True,		# make this app self contained.
	includePackages = inclPkgs,	# additional Packages to force in
	libs = libs,				# extra libraries to force in
	resources = resources,		# extra files or folders to 
copy to Resources
)


Note that this same code also hangs under RedHat 9.2 linux with 
Python 2.3.3. Still, the fact that it runs fine as a pythonw 
command-line app (with GUI) and not as a bundled app is certainly 
suspicious and if gdb will show what's going on, that'll be great! 
I'd sure rather not hack my own version of ftplib.

-- Russell