Pyzo is broken on MacOS BigSur

[jowe19]

I just installed the latest OS of Apple (MacOS 11) and Pyzo no longer opens. Do you know how to fix this?

[ak-cuervo]

I'm having the same issue. The task bar shows that pyzo is launched (a dot under the pyzo icon) but the interface never launches. I checked security and everything appears correctly configured.

[ak-cuervo]

Downloaded latest version and reinstalled. Did not solve the problem.

[almarklein]

Thanks for reporting this issue! I don't have a Mac to reproduce this, so I may ask for help to test something here ;)

I did a bit of research, and I suspect that this is an upstream issue with PyInstaller (pyinstaller/pyinstaller#5107), due to a change in MacOS 11. Though I also see some changes to CPython for supporting that MacOS version.

One thing we could try is to do a binary build on the latest CPython 3.8 or 3.9. I'll probably have time for this Monday. In the mean time, if anyone has more info on this, please comment here ...

[JeanCasteres]

Hello,
I am having the same issue. I use:

• Anaconda3-2020.07-MacOSX-x86_64
• pyzo-4.11.0-macos
  for a scholar project. Not able to rebuild from scratch.
  Thank you for your help.

[almarklein]

I changed CI to build on Python 3.9. Here is the build for MacOS: https://www.dropbox.com/s/yd6scya89spz5ie/pyzo-4.11.1-macos.dmg?dl=1

If some of you could test-drive it, that would be great!

[jowe19]

Thank's for this release, but I have the same issue as described on Friday.
Python version : 3.8 (Miniconda)

[almarklein]

Spyder is suffering from the same issue (spyder-ide/spyder#14222).

Another (intermediate) solution could be to run Pyzo from source. Just pip install pyzo pyqt5 and run python -m pyzo. I'm not sure what the default Python version is, so you may need to install python 3.9 with homebrew as is proposed is this comment.

[JeanCasteres]

Hello,
Tried it and still have the same issue. please find the log attached if it does help.
Sincerely, JC
pyzo-crashdump-20201116.zip

[SzamCha]

Here is result from terminal :

(base) samuelchalifour@iMac-de-Samuel ~ % pip install pyzo
Collecting pyzo
Downloading pyzo-4.11.0.tar.gz (2.1 MB)
|████████████████████████████████| 2.1 MB 5.3 MB/s
Building wheels for collected packages: pyzo
Building wheel for pyzo (setup.py) ... done
Created wheel for pyzo: filename=pyzo-4.11.0-py3-none-any.whl size=2200942 sha256=caecedba2126818320dbdd15d9d39bc24519520bc4cb8de37599fd35c5eb5036
Stored in directory: /Users/samuelchalifour/Library/Caches/pip/wheels/22/9f/a7/90ffc9065028cbf9b9d72a896d08f35e8fef7f0980f6a57cb8
Successfully built pyzo
Installing collected packages: pyzo
Successfully installed pyzo-4.11.0
(base) samuelchalifour@iMac-de-Samuel ~ % python -m pyzo
Traceback (most recent call last):
File "/Users/samuelchalifour/opt/miniconda3/lib/python3.8/site-packages/pyzo/util/qt/init.py", line 168, in
from PySide import version as PYSIDE_VERSION # analysis:ignore
ModuleNotFoundError: No module named 'PySide'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/Users/samuelchalifour/opt/miniconda3/lib/python3.8/runpy.py", line 185, in _run_module_as_main
mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
File "/Users/samuelchalifour/opt/miniconda3/lib/python3.8/runpy.py", line 144, in _get_module_details
return _get_module_details(pkg_main_name, error)
File "/Users/samuelchalifour/opt/miniconda3/lib/python3.8/runpy.py", line 111, in _get_module_details
import(pkg_name)
File "/Users/samuelchalifour/opt/miniconda3/lib/python3.8/site-packages/pyzo/init.py", line 74, in
from pyzo.util import paths
File "/Users/samuelchalifour/opt/miniconda3/lib/python3.8/site-packages/pyzo/util/paths.py", line 23, in
from pyzo.util.qt import QtCore
File "/Users/samuelchalifour/opt/miniconda3/lib/python3.8/site-packages/pyzo/util/qt/init.py", line 175, in
raise PythonQtError("No Qt bindings could be found")
pyzo.util.qt.PythonQtError: No Qt bindings could be found
(base) samuelchalifour@iMac-de-Samuel ~ %

[jowe19]

@SzamCha I get the same issue. Finally I have installed Python 3.9 with the installer of https://www.python.org (with homebrew, this is currently not possible to install matplotlib or panda numpy/numpy#17784).

After that, I tried
pip3 install pyqt5

and python3 -m pyzo gives now :

[almarklein]

@SzamCha, sorry you'd also need to install pyqt5, it's not in the dependencies, because either PyQt5 or PySide2 is possible ...

@jowe19 so ... does it work? Is the IDE visible, or does it just hang there?

[jowe19]

@jowe19 so ... does it work? Is the IDE visible, or does it just hang there?

But Pyzo is not visible (only opened in the dock).

[SzamCha]

"loading qt French : Failed" and still no visible IDE.
I'll try Python 3.9 first.

[almarklein]

From the discussion on the Spyder issue, two solutions seem to emerge:

• Using pip install pyqt5==5.13 to install a version of PyQt5 that appears to work.
• Setting the QT_MAC_WANTS_LAYER env variable to "1".

I just ran a new build with the latter (potential) fix: https://www.dropbox.com/s/zmnvb7nzvedh5cz/pyzo-4.11.1.2-macos.dmg?dl=1

[jowe19]

From the discussion on the Spyder issue, two solutions seem to emerge:

• Using pip install pyqt5==5.13 to install a version of PyQt5 that appears to work.
• Setting the QT_MAC_WANTS_LAYER env variable to "1".

I just ran a new build with the latter (potential) fix: https://www.dropbox.com/s/zmnvb7nzvedh5cz/pyzo-4.11.1.2-macos.dmg?dl=1

Great ! It's working perfectly.

[mickelsp]

I experienced the same issue (Pyzo app looking like it was open in the dock, but not showing up) on Big Sur on an M1 Mac mini. The new build appears to have resolved the issue for me as well. Thanks!

[almarklein]

This is great news. I will merge the PR and publish the new binaries in the official way!

[JeanCasteres]

Hello,
I downloaded I just ran a new build with the latter (potential) fix: https://www.dropbox.com/s/zmnvb7nzvedh5cz/pyzo-4.11.1.2-macos.dmg?dl=1
The 4.11.1.2 build works fine for me, thank you very much.

[operade]

Works fine for me too : thank you so much !!

[SzamCha]

Thx !!!

[almarklein]

A new version has been released. Thanks for testing everyone!

[TilinMad]

hello, i just got a mac and, until reading this topic, couldn't run pyzo. Thanks to you, I manage to run pyzo but I cannot open a python file or save my program. Do you have an idea for a solution? thanks for this helpful topic ! (I'm French so my English can be bad 😓)

[almarklein]

[...] I cannot open a python file or save my program.

Can you be more specific what happens instead? Are there error messages? You could open the logger (menu > tools > logger) to see if any errors or warnings are logged.