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

[Andy D. <an...@no...>]

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