Well, could some kind soul please explain to me why the following trivial code is misbehaving?
#!/usr/bin/python lst = [ 0, 1, 2 ] s = [] l = [ lst[0] ] r = lst[1:] while r: x = (l,r) print x s.append( x ) l.append( r.pop(0) ) print s The output I get is: ([0], [1, 2]) ([0, 1], [2]) [([0, 1, 2], []), ([0, 1, 2], [])] and the error is in the last line: the two pairs in the outer list are identical and they should be as the pairs on the first and the 2nd line, respectively! I think I'm going nuts -- for the life of me I don't see what's going on ... (I've been tracking down a bug in my larger python script, and the cause seems to boil down to the above snippet.) Thanks a lot in advance for any insights, etc. Best regards, Gabriel. -- http://mail.python.org/mailman/listinfo/python-list