Checking against NULL will be eliminated?

[Stefan Behnel]

Claudiu Popa, 02.03.2011 14:51:
> Hello Python-list,
>
>
> I  don't  know how to call it, but the following Python 3.2 code seems to raise a
> FutureWarning.
>
> def func(root=None):
>      nonlocal arg
>      if root:
>         arg += 1
> The  warning is "FutureWarning: The behavior of this method will change
> in future versions.  Use specific 'len(elem)' or 'elem is not None' test instead."
> Why is the reason for this idiom to be changed?

Let me guess - this is using ElementTree, right?

It's not the idiom itself that changes, it's the Element class in 
ElementTree that will likely change its behaviour in later versions.

Fix: do as it says.

Stefan