Syntax error while using result while using Python 3.7.0a4 shell

[arunchandy]

After naming and defining function, python is not taking result line. The error is attached. Lines look like this

def f(x): return x * 2 result = f(2) SyntaxError: invalid syntax

[calthoff]

You have to hit enter first after you type the function. Then you type result = f(2). Or don't use the shell and save the program in IDLE.

[arunchandy]

Thanks....but its still not working on shell. I saved in IDLE, that's the only way its running.