Re: array of arrays question

I think this is addressed somewhere in a python Gotchas list. These lists're huge, but if you scan thru these every once in a while, they're big timesavers: http://www.ferg.org/projects/python_gotchas.html http://zephyrfalcon.org/labs/python_pitfalls.html http://zephyrfalcon.org/labs/beginners_mi

Re: array of arrays question

yes, thank you for your help -- http://mail.python.org/mailman/listinfo/python-list

Re: array of arrays question

"Meo" <[EMAIL PROTECTED]> writes: > Somebody understand what's going on here? Yes, []*3 gives you three references to the same empty list, not three separate empty lists. You need something like [[] for i in xrange(3)] to get separate lists. Another example: a = [1,2,3] b = a a

array of arrays question

Hi, Here is what I'm doing in python 2.4.1 : >>> aOfa=[[[]]*3]*4 >>> aOfa [[[], [], []], [[], [], []], [[], [], []], [[], [], []]] >>> aOfa[3][2].append(1) >>> aOfa [[[1], [1], [1]], [[1], [1], [1]], [[1], [1], [1]], [[1], [1], [1]]] Ok, so there is something I didn't understand about python's a