[Python-ideas] Commas [was Re: except expression]

[Greg Ewing]

Alexander Belopolsky wrote:
> Funny: less than an hour ago, I paused when writing a lambda to return a 
> tuple.  I conservatively put parentheses around the tuple and did not 
> bother  to check if they are required.  Now I know that they are.

It's even more confusing when you consider that
you can write

    lambda x, y: x + y, 2

and the first comma doesn't break up the lambda,
but the second one does!

With oddities like this already in the language,
I don't think we need to worry too much about the
corner cases. People are always free to insert parens
to make things clearer. E.g. I would probably write
the above as

    (lambda (x, y): x + y), 2

-- 
Greg