[necovek]

In a Python debugger, you can trivially augment the state of the program by executing Python code right there while debugging.

I don't remember what you can do with Go's debugger, but generally for compiled programs and GDB, you can do a lot, but you can't really execute snippets of new code in-line.

The simplicity is in the fact that Python debugger syntax is really mostly Python syntax, so you already know that if you've written the Python program you are debugging.