Tkinter - how to pull error messages from cmd on screen?

Question

I created a .exe file from my .py project. And when I try to save and output the .csv file on the desktop I get 'error 13 permission denied', because I have no admin privileges. Instead, I need to save a file to C:/Users/Public to make it work. So, how do I make a pop-up window with this message using Tkinter, every time when I get 'error 13'? The error is shown in cmd only.

## Write output to csv file
def save_file():
    path_to_output_file = fd.asksaveasfilename()
    if not path_to_output_file:
        return
    file_count = 1
    for rows in range(len(df)):
        if rows % 500 == 0:
            df[rows:rows+500].to_csv(path_to_output_file + str(file_count) + '.csv', index=False, header=True, quoting=csv.QUOTE_NONNUMERIC)
            file_count += 1

Answer 1

If you've already got the error message, you can use tkinter.messagebox.showinfo function to create a pop-up window and show the error message. You can find the docs here: https://docs.python.org/3/library/tkinter.messagebox.html