[Pythonmac-SIG] app does not run when launched via main.py import was:py2app- python code packed in clear ascii

[Christopher Barker]

the Shelter wrote:
> However, now I face a strange problem even before I build an app bundle. the mainfile.py runs perfect when launched alone.
> But when run via main.py it hangs when Upload button is presses.

hmmm - it really should hang in either case....


> I susspect either wx.callback or the thread- 

I do think that's it. You can't use wx GUI calls form a different thread 
than wx was started in (usually the main thread). See the wxPython Wiki 
under "long running tasks", plus various discussions on the 
wxpython-users list.

> 	def OnStartUpload(self,evt):
> 		thread.start_new(self.FtpUp,())

this is running FtlUp in a new thread.


> 	def FtpUp(self):
> 		#start pulsing the gauge
> 		self.g1.Pulse()
> 		#disable the Upload button
> 		self.start_upload_button.Enable(False)
> 		#the progress dialog
> 		#connect to the ftp server
> 		ftp = FTP("192.168.0.1")
> 		ftp.login("username", "password")
> 		trans_file = open(pdffile)
> 		print trans_file
> 		#FTPprogress = FTPProgressDialog(filename)
> 		ftp.newstorbinary("STOR " + serial + "_" + fo_choice + "_" + tail1, trans_file, callback=self.wxcallback)
> 		
> 		trans_file.close()
> 		ftp.close()
> 
> 		#set gauge to 100% caus it hangs at 99.9% although 100%
> 		self.g1.SetValue(230)
> 		self.t8.SetLabel("Percent: 100.00")
> 		self.t9.SetLabel("Kb: " + str(self.filesize) + " of " + str(self.filesize))

and here you are making wx calls. That does cause problems.

What you need to do is wrap up these calls in a method, say 
self.UpdateProgress(), and call that method with:

wx.CallAfter(self.UpdateProgress)


that should do it. There are other ways that you can read about if this 
isn't going to work for you.

-Chris


-- 
Christopher Barker, Ph.D.
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