Filechooser doesn't work on Mac

[GrumpyPanda98]

When trying to use plyers filechooser:

import plyer as pl
path=pl.filechooser.open_file()

I get the following error:
  File "/Users/user/Documents/GitHub/PigBrain/loader.py", line 24, in load_mat_file
    path=pl.filechooser.open_file()

  File "/Users/user/opt/anaconda3/lib/python3.8/site-packages/plyer/facades/filechooser.py", line 50, in open_file
    return self._file_selection_dialog(mode="open", *args, **kwargs)

  File "/Users/user/opt/anaconda3/lib/python3.8/site-packages/plyer/facades/filechooser.py", line 70, in _file_selection_dialog
    raise NotImplementedError()

NotImplementedError

Using macosx Python 3.8.8

[el3]

I can confirm. Tried this on macosx, python 3.10, and got the same error.

[CMengich]

Works fine on mine. No errors. Macosx, python 3.9.9.

[NicFolk]

When trying to use plyers filechooser:

import plyer as pl
path=pl.filechooser.open_file()

I get the following error:
  File "/Users/user/Documents/GitHub/PigBrain/loader.py", line 24, in load_mat_file
    path=pl.filechooser.open_file()

  File "/Users/user/opt/anaconda3/lib/python3.8/site-packages/plyer/facades/filechooser.py", line 50, in open_file
    return self._file_selection_dialog(mode="open", *args, **kwargs)

  File "/Users/user/opt/anaconda3/lib/python3.8/site-packages/plyer/facades/filechooser.py", line 70, in _file_selection_dialog
    raise NotImplementedError()

NotImplementedError

Using macosx Python 3.8.8

I get the exact same error on macOS

[Wild-in-Programming]

Even I get the same issue on Mac

[Grubersky]

I can confirm, I've got the same issue on macOS / Python 3.10.3

[flueky]

I fixed this error, we need to pip install pyobjus.

[NomadDemon]

Afaik, someone is working with including pyobjus on mac instalations

[yas0nia]

Same error (Mac M1, Python 3.10, kivy 2.1, kivymd 1.1.1) occurs even with installed pyobjus, but only after packaging with pyinstaller. App just crashes :(

[Fretless14]

+1 on having this error only after pyinstaller

[NathanKoehler]

flueky

This worked for me. Using pyenv 3.11.2

[Julian-O]

My reading of the above is that this has been solved by installing the necessary packages.

I am going to close as completed, but if you have installed pyobjus and it still doesn't work, let us know.

[ibtsam3301]

If this is only happening after creating a pyinstaller build, make sure you have added a hidden import like this --hidden-import plyer.platforms.macosx.filechooser other than that, for me this happens when I import AppKit in my code or use some other library that uses AppKit.