I am unable to install wxpython on a WIndows 10 laptop after upgrading Python from 3.8.3 to 3.9.13 (32-bit). I have used wxpython succesfully for years. After going to my Python 3.9 directory and typing
python -m pip install wxpython
this is as much of the output as I could capture (it can’t all be redirected to a file and shoots off the screen too fast to see):
Collecting wxpython
Using cached wxPython-4.2.1-cp39-cp39-win32.whl (15.7 MB)
Collecting six
Using cached six-1.16.0-py2.py3-none-any.whl (11 kB)
Collecting numpy
Using cached numpy-1.25.2-cp39-cp39-win32.whl (12.7 MB)
Collecting pillow
Using cached Pillow-10.0.0.tar.gz (50.5 MB)
Installing build dependencies: started
Installing build dependencies: finished with status ‘done’
Getting requirements to build wheel: started
Getting requirements to build wheel: finished with status ‘done’
Preparing metadata (pyproject.toml): started
Preparing metadata (pyproject.toml): finished with status ‘done’
Building wheels for collected packages: pillow
Building wheel for pillow (pyproject.toml): started
Building wheel for pillow (pyproject.toml): finished with status ‘error’
Failed to build pillow
[POSSIBLE MISSING OUTPUT HERE]
File “C:\Users\robcl\AppData\Local\Temp\pip-build-env-3l8fhfiz\overlay\Lib\site-packages\setuptools\command\build_ext.py”, line 84, in run
_build_ext.run(self)
File “C:\Users\robcl\AppData\Local\Temp\pip-build-env-3l8fhfiz\overlay\Lib\site-packages\setuptools_distutils\command\build_ext.py”, line 345, in run
self.build_extensions()
File “”, line 811, in build_extensions
main.RequiredDependencyException: zlib
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Python39\lib\site-packages\pip\_vendor\pep517\in_process\_in_process.py", line 363, in <module>
main()
File "C:\Python39\lib\site-packages\pip\_vendor\pep517\in_process\_in_process.py", line 345, in main
json_out['return_val'] = hook(**hook_input['kwargs'])
File "C:\Python39\lib\site-packages\pip\_vendor\pep517\in_process\_in_process.py", line 261, in build_wheel
return _build_backend().build_wheel(wheel_directory, config_settings,
File "C:\Users\robcl\AppData\Local\Temp\pip-install-osvzd6c9\pillow_aa355def229b4b5b850a94902d1d0d82\_custom_build\backend.py", line 53, in build_wheel
return super().build_wheel(wheel_directory, config_settings, metadata_directory)
File "C:\Users\robcl\AppData\Local\Temp\pip-build-env-3l8fhfiz\overlay\Lib\site-packages\setuptools\build_meta.py", line 416, in build_wheel
return self._build_with_temp_dir(['bdist_wheel'], '.whl',
File "C:\Users\robcl\AppData\Local\Temp\pip-build-env-3l8fhfiz\overlay\Lib\site-packages\setuptools\build_meta.py", line 401, in _build_with_temp_dir
self.run_setup()
File "C:\Users\robcl\AppData\Local\Temp\pip-install-osvzd6c9\pillow_aa355def229b4b5b850a94902d1d0d82\_custom_build\backend.py", line 47, in run_setup
return super().run_setup(setup_script)
File "C:\Users\robcl\AppData\Local\Temp\pip-build-env-3l8fhfiz\overlay\Lib\site-packages\setuptools\build_meta.py", line 338, in run_setup
exec(code, locals())
File "<string>", line 1005, in <module>
__main__.RequiredDependencyException:
The headers or library files could not be found for zlib,
a required dependency when compiling Pillow from source.
Please see the install instructions at:
https://pillow.readthedocs.io/en/latest/installation.html
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for pillow
I have tried this same upgrade before and run into a different error: it was complaining about a module being missing. I installed the module and got a different error. Some articles on the net suggested I install a different version of the same module. I did this and I think it made things better but the installation still failed. Sorry to be so utterly vague, but this was some time ago and I can’t remember the details. I also tried Python 10 with the same results.
Is wxpython meant to be compatible with Python 3.9 and later?
Thanks for any help.
Rob Cliffe