[issue2186] map and filter shouldn't support None as first argument (in Py3k only)

[Alexander Belopolsky]

Alexander Belopolsky added the comment:

> What do you guys think about just making the predicate argument 
> optional?

You've read my mind! That what I was going to suggest if I realized that 
optional argument does not have to be the last one.

Looks like it would make sense to keep filterfalse with a similar 
change.

__________________________________
Tracker <report at bugs.python.org>
<http://bugs.python.org/issue2186>
__________________________________