How to fix syntax in IDLE in Python version name?

Question

Python

error occurs when pressing Run ▶Run Module

Answer 1

There is a mistake - not in the name of the python version
print("Hello, world!")

Answer 2

Thank you. I found an error.
I saved the file incorrectly.
When creating "Hello World", it was not necessary to leave everything that was originally written.
File ->New (Untitled - empty window)
print ("Hello world")
Run ▶Run Module

Answer 3

Umm, and idle is it really necessary to use it ???
Did you by any chance copy-paste the IDLE output into the script editor?