wxPython Demo code unreadable

[dopiotrko]

In download page I found:

A tarball containing the wxPython demo and samples . It is highly encouraged for new wxPython users, and experienced ones too, to download this file. It is a great learning resource with tons of examples showing how to use various components of the wxPython library. Look for a file named like wxPython-demo-VERSION.tar.gz .

So I get it and run it from: https://extras.wxpython.org/wxPython4/extras/4.1.0/wxPython-demo-4.1.0.tar.gz

Code is displayed as hex symbols instead of ascii (image below).

Why? I did not change anything.

Regards Piotr

[Robin]

That’s odd. What is your platform? Anything out of the ordinary in your environment?

[dopiotrko]

Standard Ubuntu 20.04 LTS

[avisser]

Not a solution, but you should be able to get the demo through your package manager.

[bac-cab]

I am seeing the same behavior,
also with Ubuntu 20.04 LTS.
Python 3.10 in a pipenv virtual environment.
wxPython installed with
python3.10 -m pipenv install https://extras.wxpython.org/wxPython4/extras/linux/gtk3/ubuntu-20.04/wxPython-4.2.0-cp310-cp310-linux_x86_64.whl

Perhaps not relevant, but my system has an alternate language installed (Japanese), though the alternate language was not selected.

[RichardT]

I had the same problem which I raised in another thread:

wxPython demo showing block symbols in Demo Code tab

When I ran the wxPython Demo today for the first time in a couple of weeks, I noticed that the Demo Code tab is showing block symbols containing numbers instead of regular characters. It also happens in the demo’s STC examples, but the rest of the demo appears OK. [Screenshot at 2020-12-19 11-22-31] I assume this is a font problem. I ran the demo again from the command line and none of the messages output there refer to fonts. If I copy/paste the blocks into a text editor program, the code app…

At the time I thought I had fixed it by uninstalling the Texlive-fonts-extra package to remove an alternative set of courier fonts.

What is strange is that I re-ran the fc-list | sort | grep -i courier command just now and it shows that I currently have the texlive courier fonts installed again! However, the code is being displayed correctly in the wxPython Demo.

When I did have the problem I was running wxPython 4.1.1 on Linux Mint 20, but I am now running wxPython 4.2.0 on Linux Mint 21.1.

[jjbielas]

This is an old post but i ran into this problem today 7/6/23
and found a work around.

I am using ubuntu 20.04 LTS, python 3.8, wxpython 4. ?
downloaded via pip yesterday.

As mentioned elsewhere, the demo file StyledTextCtrl_2.py
establishes platform dependent mappings for font aliases:
times, mono, helv => Times, Courier, Helvetica.

Using the open source FontManger app, i established substitutions such that
Times == FreeSerif,
Courier==FreeMono,
Helvetica==FreeSans.

I knew these Free* fonts were installed and could view them using FontManager.

This seems to have fixed the problem after the demo was restarted. My knowledge of linux font infrastructure is deficient. So i have no explanation to offer about the root cause of the issue.

Hope this helps