Warning when opening wxPython GUI

Newbie Help
1

I have made a GUI to control a test setup in our lab.
To distribute it, I have used pyInstaller, which converts the project to an executable file.
The program works the way it should, but unfortunately, a warning appears on some computers every time I open the GUI (see attachment).

Screenshot 2021-11-10 135100 !

I click ‘OK’ and the warning disappears, after which the program works as usual.

I suspect the warning has something to do with wxPython. I have searched around a lot, but can’t figure out what to do about it. Does anyone have any ideas on how to resolve the problem?

2

Yeah, that’s coming from the wxWidgets logging framework. You should be able to disable that message if desired: wx.Log — wxPython Phoenix 4.1.2a1 documentation

You could also do wx.Log.EnableLogging(False) to disable logging globally.

3

Thank you for the response.

I tried to disable logging globally but without luck. Do you have any other suggestions as to how the warning could be avoided?

4

I’m not sure this can be a help,

>>> app.SetAssertMode(wx.APP_ASSERT_SUPPRESS)

Here is the document about it. wx.PyApp — wxPython Phoenix 4.1.2a1 documentation

5

Or could it be related to this topic? Heap corruption on Windows - #4 by Adarsh

How about updating PyInstaller and Windows 10, or installing the latest redistribution package?

6

Hello Komoto48g,
Thank you for the suggestions. I tried the solutions, but without any effect. I read the discussion-topic you linked, checked that I have the newest version of PyInstaller and Windows, but I keep getting the same warning.

7

Sorry that I cannot be a help, but could this be a hint?
I checked how the locale warning occurs. As @swt2c pointed out, it can be disabled by wx.Log.EnableLogging(False). The following code doesn’t give a warning.

import wx
app = wx.App()
wx.Log.EnableLogging(False)
locale = wx.Locale(wx.LANGUAGE_ENGLISH_DENMARK)

But the following code does.

import wx
app = wx.App()
locale = wx.Locale(wx.LANGUAGE_ENGLISH_DENMARK)
wx.Log.EnableLogging(False)

locale-warning
Another possibility is that the pyinstaller embeds locale settings while packaging…

8

I have tried the posted solutions but without success.
To check if pyinstaller embeds locale settings while packaging I tried to hardcode locale settings (LANGUAGE_ENGLISH) and tried to log it:

wx.Log.EnableLogging(False)
locale = wx.Locale()
locale.Init(language=wx.LANGUAGE_ENGLISH, flags=wx.LOCALE_DONT_LOAD_DEFAULT)
lng = wx.Locale.GetLocale(locale)
lng_avb = wx.Locale.IsAvailable(wx.LANGUAGE_ENGLISH)
Logger.error(f'Language: {lng}\nAvalibility: {lng_avb}')

From the log I can se that the language set to English and that the language is available, but still I get the same error when starting the program up.

9

To find the cause, it’s a good idea to start with the simplest program, excluding all dependent packages, and see if the problem occurs.
Btw, did you already try @Robin’s prescription?
see: “wxPython4.1.1 Python3.8 locale wxAssertionError - #3 by Robin”

import locale
import wx

def check_locale():
    print(locale.getdefaultlocale()) # ('ja_JP', 'cp932')
    print(locale.getlocale())        # (None, None)
    wxloc = wx.GetLocale()           # None
    if wxloc:
        print((wxloc.Locale, wxloc.Name))

class App(wx.App):
    def InitLocale(self):
        import sys
        if sys.platform.startswith('win') and sys.version_info > (3,8):
            import locale
            locale.setlocale(locale.LC_ALL, 'C')
    
    def OnInit(self):
        wx.Log.EnableLogging(False)
        frm = wx.Frame(None)
        frm.Show()
        wx.CallAfter(check_locale)
        return True

app = App()
app.MainLoop()

:memo: InitLocale is called before OnInit.