[Tutor] Prime Numbers

[Andreas Perstinger]

On 16.12.2013 09:49, Rafael Knuth wrote:
> That's the tiny little detail I am confused about: What does return
> exactly do? Does it return only the first value within a loop or does
> it iterate through all values within a loop? (unless a given condition
> is met)

The return statement has nothing to do with loops. Whenever the Python 
interpreter gets to a return statement during the program execution it 
will immediately leave the current function and return to the caller.

"return" outside of a function doesn't work:

 >>> for i in range(10):
...   return i
...
   File "<stdin>", line 2
SyntaxError: 'return' outside function

Bye, Andreas