[Tutor] Rerouting a traceback

[Mats Wichmann]

On 1/25/21 7:21 PM, Jim Byrnes wrote:
> Linux Mint 20 - Python 3.8
> 
> Is it possible to reroute a traceback to a GUI wintow?

It's software, so it's possible...

> 
> Here's why I ask. I usually run scripts using a launcher app on my top 
> panel.  The scripts download stock data and then manipulate it in 
> Libreoffice calc. The execution time varies. After a while if nothing 
> appears in calc I assume there was an error and must re-launch the 
> script from a terminal to see what went wrong.
> 
> It would be helpful if I could display the error when it occurs in popup 
> window.
> 
> I've googled it but so far haven't found any help. I've used pysimplegui 
> on occasion and thought maybe it's debug window would do the trick but 
> so far I haven't been able to figure anything out.
> 
> So before I waste anymore time on this I would like to know if it is 
> possible and maybe a hint on how to do it if it is possible.

If the script you launch is your own - that is, if you feel like 
modifying it - it can just pop up a simple message box. This might end 
up being sufficient:

from tkinter import messagebox

messagebox.showerror("FAILED", "error message from the failure")


but you'll need to ampliy what you need and who controls what in this 
scenario, it might be more complicated.