Why is this?

[Bryan Olson]

Jiri Barton wrote:
 > Yes, now it is clear!
 >
 > As always, I should have RTFM, the operator* is not just a syntactic 
sugar
 > and thus does not make copies.

That issue bites, like, everyone.

 > You know, my actual scenario was with four
 > variables at the time:
 >
 > a, b, c, d = [], [], [], []

Incidentally, to create a list of 37 distinct empty lists, you
can use:

    [[] for _ in range(37)]


-- 
--Bryan