what does 'a=b=c=[]' do

[Steven D'Aprano]

On Wed, 21 Dec 2011 18:20:16 -0500, Dennis Lee Bieber wrote:

> 	For the amount of typing, it's easier to just do a straight line
> tuple unpack
> 
>>>> a,b,c = ([],[],[])

Note that tuples are created by the comma, not the round brackets (or 
parentheses for any Americans reading). So the round brackets there are 
strictly redundant:

a, b, c = [], [], []

The only times you need the brackets around a tuple is to control the 
precedence of operations, or for an empty tuple.


-- 
Steven