Pysimplegui: Suppression of FolderBrowse Warning (Mac)

[trcote]

Type of Issues (Enhancement, Error, Bug, Question)

Warning

Operating System

Mac OS Catalina 10.15.4

Python version

Python 3.7.1

PySimpleGUI Port and Version

module 'PySimpleGUI' from ...
4.19.0 Released 5-May-2020

Your Experience Levels In Months or Years

__5__ Python programming experience
__5__ Programming experience overall
__Yes__ Have used another Python GUI Framework (tkinter, Qt, etc) previously (yes/no is fine)?

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• [X] Read instructions on how to file an Issue
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• [X] Searched through the readme for your specific port if not PySimpleGUI (Qt, WX, Remi)
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• [X] Note that there are also Demo Programs under each port on GitHub
• [X] Run your program outside of your debugger (from a command line)
• [X] Searched through Issues (open and closed) to see if already reported

Description of Problem / Question / Details

I get the following warning when using a Folder Browse Element on my Mac. It does not occur however when using a File Browse Element. Do you know if there is a way to suppress this? NSSavePanel seems to be directly related to Macs so I think this is only a Mac issue.

WARNING: <NSOpenPanel: 0x7f7fb91d5b50> running implicitly; please run panels using NSSavePanel rather than NSApplication.

Paste your code here

import PySimpleGUI as sg
print(sg)
print(sg.version)

layout = [[sg.FolderBrowse('Folder Browse', key="BROWSE", target='INPUT'),
           sg.Input('Hi', key='INPUT')],
          [sg.FileBrowse('File Browse', key="BROWSE2", target='INPUT2'),
           sg.Input('Hi2', key='INPUT2')]]

window = sg.Window('Window that stays open', layout).finalize()
while True:
    event, values = window.read()
    if event in (None, 'Exit'):
        break
window.close()

[PySimpleGUI]

Never heard of it before. It's a warning so not something I can catch and do anything with.

You're the first person to report it and this button has been around since July 2018 so it leads to be think something on the Mac has recently changed. Or something on your specific Mac perhaps.

Let's see if other Mac users come up with similar results or have seen this before.

[trcote]

No problem. I've tried using the warningsmodule to suppress it and it doesn't seem to recognize it as a typical warning so its gonna have to just stay for now.

[PySimpleGUI]

The tkinter call that I'm making to browse for folders is filedialog.askdirectory. Perhaps searching for your error along with this tkinter information will help lead to the root cause of the warning.

[PySimpleGUI]

You can also try running this little program and see if it generates the same warning.

import tkinter as tk
from tkinter import filedialog

folder_name = tk.filedialog.askdirectory()
print(folder_name)

[trcote]

Found it! The difference you actually already have solved in the FileBrowse code. For Mac, setting the parent to the root will give the warning.

Tkinter with error:

from tkinter import filedialog
from tkinter import *

root = Tk()
root.title('Test')

def open_f():
    root.filename = filedialog.askdirectory(parent=root)
    my_label = Label(root, text=root.filename).pack()

my_btn = Button(root, text='Open File', command=open_f).pack()
root.mainloop()

Warning after clicking FileDialog:

Changing askdirectory to omit parent:

root.filename = filedialog.askdirectory()

No warning after clicking FileDialog:

Selection still works but now with no warning.

[PySimpleGUI]

Oh, I see. Didn't realize the same hack needed to be done for that one too. Will get it fixed up and checked in shortly.

[PySimpleGUI]

Added fix to the code and released to GitHub. You can use the "upgrade" button in sg.main() to overwrite your pip installed version with the GitHub version. I HOPE that it works on the Mac. You may be the first person that tries it however.

If you do this, run sg.main() again afterward to make sure the correct version number is shown.

[trcote]

Downloaded and tested: no warning. Good to go, thanks!

[PySimpleGUI]

Sorry it took a few iterations, but we eventually got there.