importwxscript="""import matplotlib.pyplot as plimport numpy as npx = np.linspace(0, 1, 100)y = x ** 1.4pl.figure()pl.plot(x, y)pl.show()"""classMain(wx.Frame):def__init__(self):super(Main,self).__init__(None)button=wx.Button(self,wx.ID_ANY,'Run')button.Bind(wx.EVT_BUTTON,self.action_run)self.Show()defaction_run(self,e=None):exec(script)if__name__=='__main__':app=wx.App(False)frame=Main()app.MainLoop()

[michael@localhost play]$ gdb --args python segfault-gui.pyGNU gdb (GDB) Fedora 7.7.1-19.fc20Copyright (C) 2014 Free Software Foundation, Inc.License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>This is free software: you are free to change and redistribute it.There is NO WARRANTY, to the extent permitted by law.  Type "show copying"and "show warranty" for details.This GDB was configured as "x86_64-redhat-linux-gnu".Type "show configuration" for configuration details.For bug reporting instructions, please see:<http://www.gnu.org/software/gdb/bugs/>.Find the GDB manual and other documentation resources online at:<http://www.gnu.org/software/gdb/documentation/>.For help, type "help".Type "apropos word" to search for commands related to "word"...Reading symbols from python...Reading symbols from /usr/lib/debug/usr/bin/python2.7.debug...done.done.(gdb) rStarting program: /usr/bin/python segfault-gui.py[Thread debugging using libthread_db enabled]Using host libthread_db library "/lib64/libthread_db.so.1".Traceback (most recent call last):  File "/usr/share/gdb/auto-load/usr/lib64/libgobject-2.0.so.0.3800.2-gdb.py", line 9, in <module>    from gobject import register  File "/usr/share/glib-2.0/gdb/gobject.py", line 3, in <module>    import gdb.backtraceImportError: No module named backtraceMissing separate debuginfo for /lib64/libgraphite2.so.3Try: yum --enablerepo='*debug*' install /usr/lib/debug/.build-id/90/82e46860379c3dff9004eb8c9834e50afbb528.debug[New Thread 0x7fffee6b1700 (LWP 3733)][New Thread 0x7fffedeb0700 (LWP 3734)][New Thread 0x7fffed6af700 (LWP 3735)][New Thread 0x7fffeceae700 (LWP 3736)][Thread 0x7fffeceae700 (LWP 3736) exited]Program received signal SIGSEGV, Segmentation fault.wxEvtHandler::SearchDynamicEventTable (this=this@entry=0x23e08d0, event=...)    at src/common/event.cpp:14121412            if ((event.GetEventType() == entry->m_eventType) && (entry->m_fn != 0))(gdb) bt#0  wxEvtHandler::SearchDynamicEventTable (this=this@entry=0x23e08d0,     event=...) at src/common/event.cpp:1412#1  0x0000003a91ef09f2 in wxEvtHandler::ProcessEvent (this=0x23e08d0,     event=...) at src/common/event.cpp:1297#2  0x0000003a924079f7 in gtk_window_key_press_callback (    widget=widget@entry=0x10f4170, gdk_event=0x23e66b0,     win=win@entry=0x23e08d0) at src/gtk/window.cpp:1034#3  0x0000003a94b484ec in _gtk_marshal_BOOLEAN__BOXED (closure=0x1fdd550,     return_value=0x7fffffffc970, n_param_values=<optimized out>,     param_values=0x7fffffffca20, invocation_hint=<optimized out>,     marshal_data=<optimized out>) at gtkmarshalers.c:86#4  0x0000003a81e10298 in g_closure_invoke (closure=0x1fdd550,     return_value=return_value@entry=0x7fffffffc970, n_param_values=2,     param_values=param_values@entry=0x7fffffffca20,     invocation_hint=invocation_hint@entry=0x7fffffffc9c0) at gclosure.c:777#5  0x0000003a81e2235d in signal_emit_unlocked_R (node=node@entry=0x102b7b0,     detail=detail@entry=0, instance=instance@entry=0x10f4170,     emission_return=emission_return@entry=0x7fffffffcad0,     instance_and_params=instance_and_params@entry=0x7fffffffca20)    at gsignal.c:3586#6  0x0000003a81e29ddd in g_signal_emit_valist (instance=<optimized out>,     signal_id=<optimized out>, detail=<optimized out>,     var_args=var_args@entry=0x7fffffffcbb0) at gsignal.c:3340#7  0x0000003a81e2a3af in g_signal_emit (instance=instance@entry=0x10f4170,     signal_id=<optimized out>, detail=detail@entry=0) at gsignal.c:3386#8  0x0000003a94c777a4 in gtk_widget_event_internal (    widget=widget@entry=0x10f4170, event=event@entry=0x23e66b0)    at gtkwidget.c:5017#9  0x0000003a94c77a79 in IA__gtk_widget_event (    widget=widget@entry=0x10f4170, event=event@entry=0x23e66b0)    at gtkwidget.c:4814#10 0x0000003a94c8d2bb in IA__gtk_window_propagate_key_event (    window=window@entry=0x10645b0, event=event@entry=0x23e66b0)    at gtkwindow.c:5199#11 0x0000003a94c8fe13 in gtk_window_key_press_event (widget=0x10645b0,     event=0x23e66b0) at gtkwindow.c:5229#12 0x0000003a94b484ec in _gtk_marshal_BOOLEAN__BOXED (closure=0x102b760,     return_value=0x7fffffffce40, n_param_values=<optimized out>,     param_values=0x7fffffffcef0, invocation_hint=<optimized out>,     marshal_data=<optimized out>) at gtkmarshalers.c:86#13 0x0000003a81e10298 in g_closure_invoke (closure=closure@entry=0x102b760,     return_value=return_value@entry=0x7fffffffce40, n_param_values=2,     param_values=param_values@entry=0x7fffffffcef0,     invocation_hint=invocation_hint@entry=0x7fffffffce90) at gclosure.c:777#14 0x0000003a81e2211b in signal_emit_unlocked_R (node=node@entry=0x102b7b0,     detail=detail@entry=0, instance=instance@entry=0x10645b0,     emission_return=emission_return@entry=0x7fffffffcfa0,     instance_and_params=instance_and_params@entry=0x7fffffffcef0)    at gsignal.c:3624---Type <return> to continue, or q <return> to quit---#15 0x0000003a81e29ddd in g_signal_emit_valist (instance=<optimized out>,     signal_id=<optimized out>, detail=<optimized out>,     var_args=var_args@entry=0x7fffffffd080) at gsignal.c:3340#16 0x0000003a81e2a3af in g_signal_emit (instance=instance@entry=0x10645b0,     signal_id=<optimized out>, detail=detail@entry=0) at gsignal.c:3386#17 0x0000003a94c777a4 in gtk_widget_event_internal (    widget=widget@entry=0x10645b0, event=event@entry=0x23e66b0)    at gtkwidget.c:5017#18 0x0000003a94c77a79 in IA__gtk_widget_event (    widget=widget@entry=0x10645b0, event=event@entry=0x23e66b0)    at gtkwidget.c:4814#19 0x0000003a94b467e7 in IA__gtk_propagate_event (widget=0x10645b0,     event=0x23e66b0) at gtkmain.c:2464#20 0x0000003a94b46b0b in IA__gtk_main_do_event (event=0x23e66b0)    at gtkmain.c:1685#21 0x0000003a9526040c in gdk_event_dispatch (source=source@entry=0x867810,     callback=<optimized out>, user_data=<optimized out>)    at gdkevents-x11.c:2403#22 0x0000003a80a492a6 in g_main_dispatch (context=0xc1f0b0) at gmain.c:3066#23 g_main_context_dispatch (context=context@entry=0xc1f0b0) at gmain.c:3642#24 0x0000003a80a49628 in g_main_context_iterate (context=0xc1f0b0,     block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)    at gmain.c:3713#25 0x0000003a80a49a3a in g_main_loop_run (loop=0x10e9ae0) at gmain.c:3907#26 0x0000003a94b45b57 in IA__gtk_main () at gtkmain.c:1257#27 0x0000003a923f718a in wxEventLoop::Run (this=0x10f6310)    at src/gtk/evtloop.cpp:76#28 0x0000003a92476a3b in wxAppBase::MainLoop (this=this@entry=0xa93950)    at src/common/appcmn.cpp:312#29 0x00007ffff14293af in wxPyApp::MainLoop (this=0xa93950)    at src/helpers.cpp:215#30 0x00007ffff146a81c in _wrap_PyApp_MainLoop (args=<optimized out>)    at src/gtk/_core_wrap.cpp:31691#31 0x00000039a7ce16f2 in ext_do_call (nk=<optimized out>,     na=<optimized out>, flags=<optimized out>, pp_stack=0x7fffffffd5a0,     func=<built-in function PyApp_MainLoop>)    at /usr/src/debug/Python-2.7.5/Python/ceval.c:4408#32 PyEval_EvalFrameEx (    f=f@entry=Frame 0x10f8670, for file /usr/lib64/python2.7/site-packages/wx-2.8-gtk2-unicode/wx/_core.py, line 7306, in MainLoop (args=(<App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>,), kwargs={}), throwflag=throwflag@entry=0)    at /usr/src/debug/Python-2.7.5/Python/ceval.c:2779#33 0x00000039a7ce21dd in PyEval_EvalCodeEx (co=<optimized out>,     globals=<optimized out>, locals=locals@entry=0x0,     args=args@entry=0x7ffff1751728, argcount=1, kws=kws@entry=0x0,     kwcount=kwcount@entry=0, defs=defs@entry=0x0, defcount=defcount@entry=0,     closure=0x0) at /usr/src/debug/Python-2.7.5/Python/ceval.c:3330---Type <return> to continue, or q <return> to quit---#34 0x00000039a7c6f0d8 in function_call (func=<function at remote 0x827500>,     arg=(<App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>,), kw=0x0)    at /usr/src/debug/Python-2.7.5/Objects/funcobject.c:526#35 0x00000039a7c4a0d3 in PyObject_Call (    func=func@entry=<function at remote 0x827500>,     arg=arg@entry=(<App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>,), kw=kw@entry=0x0)    at /usr/src/debug/Python-2.7.5/Objects/abstract.c:2529#36 0x00000039a7c590c5 in instancemethod_call (    func=<function at remote 0x827500>,     arg=(<App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>,), kw=0x0)    at /usr/src/debug/Python-2.7.5/Objects/classobject.c:2602#37 0x00000039a7c4a0d3 in PyObject_Call (    func=func@entry=<instancemethod at remote 0x8b6280>,     arg=arg@entry=(<App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>,), kw=kw@entry=0x0)    at /usr/src/debug/Python-2.7.5/Objects/abstract.c:2529#38 0x00000039a7cde37c in do_call (nk=<optimized out>, na=1,     pp_stack=0x7fffffffdaf0, func=<instancemethod at remote 0x8b6280>)    at /usr/src/debug/Python-2.7.5/Python/ceval.c:4316#39 call_function (oparg=<optimized out>, pp_stack=0x7fffffffdaf0)    at /usr/src/debug/Python-2.7.5/Python/ceval.c:4121#40 PyEval_EvalFrameEx (    f=f@entry=Frame 0x10f84b0, for file /usr/lib64/python2.7/site-packages/wx-2.8-gtk2-unicode/wx/_core.py, line 8010, in MainLoop (self=<App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>),     throwflag=throwflag@entry=0)    at /usr/src/debug/Python-2.7.5/Python/ceval.c:2740#41 0x00000039a7ce0980 in fast_function (nk=<optimized out>, na=1, n=1,     pp_stack=0x7fffffffdc50, func=<function at remote 0x8298c0>)    at /usr/src/debug/Python-2.7.5/Python/ceval.c:4184#42 call_function (oparg=<optimized out>, pp_stack=0x7fffffffdc50)    at /usr/src/debug/Python-2.7.5/Python/ceval.c:4119#43 PyEval_EvalFrameEx (    f=f@entry=Frame 0x6cc750, for file segfault-gui.py, line 23, in <module> (), throwflag=throwflag@entry=0)    at /usr/src/debug/Python-2.7.5/Python/ceval.c:2740#44 0x00000039a7ce21dd in PyEval_EvalCodeEx (co=co@entry=0x7ffff7ed79b0,     globals=globals@entry={'script': '\nimport matplotlib.pyplot as pl\nimport numpy as np\n\nx = np.linspace(0, 1, 100)\ny = x ** 1.4\npl.figure()\npl.plot(x, y)\npl.show()\n', '__builtins__': <module at remote 0x7ffff7f7eb08>, '__file__': 'segfault-gui.py', '__package__': None, 'frame': <Main(this=<PySwigObject a---Type <return> to continue, or q <return> to quit---t remote 0xe86cf0>) at remote 0x7ffff1928d50>, '__name__': '__main__', 'app': <App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>, 'Main': <type at remote 0xc86090>, '__doc__': None, 'wx': <module at remote 0x7ffff7ee8910>},     locals=locals@entry={'script': '\nimport matplotlib.pyplot as pl\nimport numpy as np\n\nx = np.linspace(0, 1, 100)\ny = x ** 1.4\npl.figure()\npl.plot(x, y)\npl.show()\n', '__builtins__': <module at remote 0x7ffff7f7eb08>, '__file__': 'segfault-gui.py', '__package__': None, 'frame': <Main(this=<PySwigObject at remote 0xe86cf0>) at remote 0x7ffff1928d50>, '__name__': '__main__', 'app': <App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>, 'Main': <type at remote 0xc86090>, '__doc__': None, 'wx': <module at remote 0x7ffff7ee8910>}, args=args@entry=0x0, argcount=argcount@entry=0,     kws=kws@entry=0x0, kwcount=kwcount@entry=0, defs=defs@entry=0x0,     defcount=defcount@entry=0, closure=closure@entry=0x0)    at /usr/src/debug/Python-2.7.5/Python/ceval.c:3330#45 0x00000039a7ce22e2 in PyEval_EvalCode (co=co@entry=0x7ffff7ed79b0,     globals=globals@entry={'script': '\nimport matplotlib.pyplot as pl\nimport numpy as np\n\nx = np.linspace(0, 1, 100)\ny = x ** 1.4\npl.figure()\npl.plot(x, y)\npl.show()\n', '__builtins__': <module at remote 0x7ffff7f7eb08>, '__file__': 'segfault-gui.py', '__package__': None, 'frame': <Main(this=<PySwigObject at remote 0xe86cf0>) at remote 0x7ffff1928d50>, '__name__': '__main__', 'app': <App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>, 'Main': <type at remote 0xc86090>, '__doc__': None, 'wx': <module at remote 0x7ffff7ee8910>},     locals=locals@entry={'script': '\nimport matplotlib.pyplot as pl\nimport numpy as np\n\nx = np.linspace(0, 1, 100)\ny = x ** 1.4\npl.figure()\npl.plot(x, y)\npl.show()\n', '__builtins__': <module at remote 0x7ffff7f7eb08>, '__file__': 'segfault-gui.py', '__package__': None, 'frame': <Main(this=<PySwigObject at remote 0xe86cf0>) at remote 0x7ffff1928d50>, '__name__': '__main__', 'app': <App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>, 'Main': <type at remote 0xc86090>, '__doc__': None, 'wx': <module at remote 0x7ffff7ee8910>}) at /usr/src/debug/Python-2.7.5/Python/ceval.c:689#46 0x00000039a7cfb71f in run_mod (mod=<optimized out>,     filename=filename@entry=0x7fffffffe3aa "segfault-gui.py",     globals=globals@entry={'script': '\nimport matplotlib.pyplot as pl\nimport numpy as np\n\nx = np.linspace(0, 1, 100)\ny = x ** 1.4\npl.figure()\npl.plot(x, y)\npl.show()\n', '__builtins__': <module at remote 0x7ffff7f7eb08>, '__file__': 'segfault-gui.py', '__package__': None, 'frame': <Main(this=<PySwigObject at remote 0xe86cf0>) at remote 0x7ffff1928d50>, '__name__': '__main__', 'app': <App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>, 'Main': <type at remote 0xc86090>, '__doc__': None, 'wx': <module at remote 0x7ffff7ee8910>},     locals=locals@entry={'script': '\nimport matplotlib.pyplot as pl\nimport numpy as np\n\nx = np.linspace(0, 1, 100)\ny = x ** 1.4\npl.figure()\npl.plot(x, ---Type <return> to continue, or q <return> to quit---y)\npl.show()\n', '__builtins__': <module at remote 0x7ffff7f7eb08>, '__file__': 'segfault-gui.py', '__package__': None, 'frame': <Main(this=<PySwigObject at remote 0xe86cf0>) at remote 0x7ffff1928d50>, '__name__': '__main__', 'app': <App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>, 'Main': <type at remote 0xc86090>, '__doc__': None, 'wx': <module at remote 0x7ffff7ee8910>}, flags=flags@entry=0x7fffffffdeb0,     arena=arena@entry=0x6b9570)    at /usr/src/debug/Python-2.7.5/Python/pythonrun.c:1373#47 0x00000039a7cfc8de in PyRun_FileExFlags (fp=fp@entry=0x6b7bc0,     filename=filename@entry=0x7fffffffe3aa "segfault-gui.py",     start=start@entry=257,     globals=globals@entry={'script': '\nimport matplotlib.pyplot as pl\nimport numpy as np\n\nx = np.linspace(0, 1, 100)\ny = x ** 1.4\npl.figure()\npl.plot(x, y)\npl.show()\n', '__builtins__': <module at remote 0x7ffff7f7eb08>, '__file__': 'segfault-gui.py', '__package__': None, 'frame': <Main(this=<PySwigObject at remote 0xe86cf0>) at remote 0x7ffff1928d50>, '__name__': '__main__', 'app': <App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>, 'Main': <type at remote 0xc86090>, '__doc__': None, 'wx': <module at remote 0x7ffff7ee8910>},     locals=locals@entry={'script': '\nimport matplotlib.pyplot as pl\nimport numpy as np\n\nx = np.linspace(0, 1, 100)\ny = x ** 1.4\npl.figure()\npl.plot(x, y)\npl.show()\n', '__builtins__': <module at remote 0x7ffff7f7eb08>, '__file__': 'segfault-gui.py', '__package__': None, 'frame': <Main(this=<PySwigObject at remote 0xe86cf0>) at remote 0x7ffff1928d50>, '__name__': '__main__', 'app': <App(this=<PySwigObject at remote 0x7ffff7ef0360>, stdioWin=None, saveStdio=(<file at remote 0x7ffff7f99150>, <file at remote 0x7ffff7f991e0>)) at remote 0x7ffff1977490>, 'Main': <type at remote 0xc86090>, '__doc__': None, 'wx': <module at remote 0x7ffff7ee8910>}, closeit=closeit@entry=1,     flags=flags@entry=0x7fffffffdeb0)    at /usr/src/debug/Python-2.7.5/Python/pythonrun.c:1359#48 0x00000039a7cfdb69 in PyRun_SimpleFileExFlags (fp=fp@entry=0x6b7bc0,     filename=filename@entry=0x7fffffffe3aa "segfault-gui.py",     closeit=closeit@entry=1, flags=flags@entry=0x7fffffffdeb0)    at /usr/src/debug/Python-2.7.5/Python/pythonrun.c:951#49 0x00000039a7cfe093 in PyRun_AnyFileExFlags (fp=fp@entry=0x6b7bc0,     filename=filename@entry=0x7fffffffe3aa "segfault-gui.py",     closeit=closeit@entry=1, flags=flags@entry=0x7fffffffdeb0)    at /usr/src/debug/Python-2.7.5/Python/pythonrun.c:755#50 0x00000039a7d0eb7f in Py_Main (argc=<optimized out>, argv=<optimized out>)    at /usr/src/debug/Python-2.7.5/Modules/main.c:640#51 0x0000003a7ee21d65 in __libc_start_main (main=0x4006f0 <main>, argc=2,     argv=0x7fffffffe078, init=<optimized out>, fini=<optimized out>,     rtld_fini=<optimized out>, stack_end=0x7fffffffe068) at libc-start.c:285#52 0x0000000000400721 in _start ()