To write a Python script that runs on double click, opens a terminal and displays "Hello world", follow the steps given below:Step 1: Create a new Python fileOpen your text editor and create a new Python file. Name your file anything you like, for example, "hello_world.py".Step 2: Write Python codeIn your Python file, write the code to print "Hello world" to the terminal.import osos.system("gnome-terminal -e 'bash -c \"echo Hello world; exec bash\"'")Note: You can also use 'xterm' instead of 'gnome-terminal' in the above code to open the Xterm terminal.Step 3: Save the fileSave the file with a .py extension. The final file should be named "hello_world.py".Step 4: Make the file executableOpen a terminal and navigate to the directory where the file is saved. Use the chmod command to make the file executable.chmod +x hello_world.pyStep 5: Double-click to run the scriptNow, double-click on the file to run it. A terminal window should open and display the message "Hello world".Congratulations, you have successfully written a Python script that runs on double click, opens a terminal and displays "Hello world".