Zero [was Re: What is considered an "advanced" topic in Python?]

[random832 at fastmail.us]

On Mon, Jun 1, 2015, at 09:18, Marko Rauhamaa wrote:
>       if elements:
>           for element in elements:
>               ...
> 
>    instead of:
> 
>       for elements in elements:

TypeError: 'NoneType' object is not iterable