wxPython build menus on MacBook - macos

Question

On a MacBook running MacOS Mojave 10.14.6, Python 3.7.4 and wxPython 4.0.6 I can't get menus to work when creating a GUI. Here's the code I'm using.
def basicGUI(self):
menuBar = wx.MenuBar()
fileButton = wx.Menu()
exitItem = fileButton.Append(wx.ID_EXIT, 'Exit', 'status msg..')
menuBar.Append(fileButton, 'File')
menuBar.Append(fileButton, 'Edit')
self.SetMenuBar(menuBar)
self.Bind(wx.EVT_MENU, self.Quit, exitItem)
self.SetTitle('Epic Window')
self.Show(True)
Creating the frame and panel is all OK. Any assistance would be appreciated. thanks

Answer 1

I don't own a mac, but running your code on windows produces an assertion error because you're adding the menu named 'fileButton' twice. If you comment out the line menuBar.Append(fileButton, 'Edit') your example should run. If you want to create an edit menu, don't reuse the file menu instance, create a new wx.Menu() instance.
import wx
class Frame(wx.Frame):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.basicGUI()
def basicGUI(self):
menuBar = wx.MenuBar()
fileButton = wx.Menu()
editmenu = wx.Menu()
exitItem = wx.MenuItem(fileButton, wx.ID_EXIT, "Exit")
edit_item = wx.MenuItem(editmenu, wx.ID_EDIT, "Edit")
fileButton.Append(exitItem)
editmenu.Append(edit_item)
menuBar.Append(fileButton, 'File')
menuBar.Append(editmenu, 'Edit')
self.SetMenuBar(menuBar)
self.Bind(wx.EVT_MENU, self.Quit, id=wx.ID_EXIT)
self.Bind(wx.EVT_MENU, self.on_edit, id=wx.ID_EDIT)
self.SetTitle('Epic Window')
self.CenterOnScreen(wx.BOTH)
self.Show(True)
def Quit(self, event):
self.Close()
def on_edit(self, event):
with wx.MessageDialog(self, "You clicked edit", "Caption", wx.ICON_INFORMATION) as dialog:
dialog.ShowModal()
app = wx.App()
frame = Frame(parent=None)
app.MainLoop()
Side Note:
It's helpful if you post a runnable example of your problem instead of just the excerpted method so we can see the problem in its full context instead of having to assume what the rest of your program looks like.