How to interact with zenity window and type some text inside it?

Change your zenity.sh file with:

#!/usr/bin/python

zenity --forms --title="Question" \
   --add-entry="Question" \

To:

#!/bin/bash

zenity --forms --title="Question" \
   --add-entry="Question" \

You are not calling zenity within a python script. You are calling it from a bash/shell command so your shebang (first line) must be #!/bin/bash not #!/usr/bin/python.

There are two requirements for xdotool to work with your example:

• You should be running X11 and not Wayland.
• Your window created by zenity must be fully loaded before the xdotool command is run.

To do this properly, you need to:

1. Load the window in the background ( with & ) like so:

   zenity --forms --title="Question" --add-entry="Question" &
   

2. Give some time for the window to fully load ( with sleep ) like so:

   sleep 1
   

3. Get your window ID by name like so:

   window="$(xdotool search --name 'Question')"
   

4. Activate your window by ID ( stored in $window in step 3 above ) like so:

   xdotool windowactivate "$window"
   

5. Type the text in the window like so:

   xdotool type 'some text'
   

So the final script will look like this:

#!/bin/bash

zenity --forms --title="Question" --add-entry="Question" &

sleep 1

window="$(xdotool search --name 'Question')"

xdotool windowactivate "$window"

xdotool type 'some text'