Re: [Pythondialog-users] Crash! dialog.PythonDialogErrorBeforeExecInChildProcess - Please help to debug.

[Peter Å. <as...@ce...>]

Try running "strace -f" on the entire application.

Rgds,
Peter


On Wed, 4 Jan 2012, Andy Davidson wrote:

>
> Dear pythondialog-users.
>
> Thanks for this software, but please could I request some technical support with regards to an issue I am struggling to debug.  I am trying to produce a dialog.menu and populate the menu with items as discovered in a database.
>
> I see in demo.py that d.menu takes a list of tuples for menu option choices, so this is the data type I am building.
>
> This is the code I am using :
>
> def add_check(d, userid, cursor):
>        cursor.execute ("SELECT id, hostname FROM host WHERE user_id=%s", userid)
>        hostchoices = list(cursor.fetchall())
> #       print hostchoices;
>        while 1:
>                (code, tag) = d.menu( "Pick a host to manage?",
>                                       width=60,
>                                       choices=hostchoices )
>                if handle_exit_code(d, code):
>                        break
>                d.msgbox ("You picked host " . tag)
>        return 0
>
>
>
> When I print hostchoices, I see :
>
> [(1L, 'host1'), (2L, 'host2), (3L, 'host3'), (4L, 'host4'), (6L, 'host6'), (7L, 'host7'), (8L, 'host8')]
>
>
>
>
> It produces this traceback :
>
> Traceback (most recent call last):
>  File "monshell.py", line 126, in <module>
>    if __name__ == "__main__": main()
>  File "monshell.py", line 119, in main
>    main_menu(d, userid, cursor)
>  File "monshell.py", line 98, in main_menu
>    options[tag](d,userid,cursor)
>  File "monshell.py", line 73, in add_check
>    choices=hostchoices )
>  File "build/bdist.macosx-10.7-intel/egg/dialog.py", line 1253, in menu
>
>  File "build/bdist.macosx-10.7-intel/egg/dialog.py", line 825, in _perform
>
>  File "build/bdist.macosx-10.7-intel/egg/dialog.py", line 765, in _wait_for_program_termination
>
> dialog.PythonDialogErrorBeforeExecInChildProcess: <PythonDialogErrorBeforeExecInChildProcess: perhaps the dialog-like program could not be executed; perhaps the system is out of memory; perhaps the maximum number of open file descriptors has been reached>
>
>
> It happens on the Linux and OSX version I have.
>
> Any clues about how I can debug this ?  Dialog is running ok elsewhere in my application - in fact I also use a static menu elsewhere which builds just fine.
>
> Thanks
> Andy
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