[Tutor] multiple assignment on one line

[Alan Gauld]

"Lie Ryan" <lie.1296 at gmail.com> wrote

 I was a bit surprised this doesn't work though:
>
> a, b += k, k
>

What would you expect?
Remember that

a,b = c,d

is just tuple assignment without using parens (and parens are not part of 
the tuple definition)

So using tuples

a,b += k,k

would unwrap as

a,b = (a,b) + (k,k)   -> (a,b,k,k)

which should give an error since we are then unpacking 4 values
into two...

It doesn't really make sense.

-- 
Alan Gauld
Author of the Learn to Program web site
http://www.alan-g.me.uk/