tuple of ids of integers or lists

[bartolome.sintes at gmail.com]

OK. Now I understand it. 

I was confused because when two list are created in two different lines, Python gives them different ids, but when the two lists are created in the same line (in a tuple) Python gives them the same id. It doesn't really matter as these lists are just created and destroyed, as you have said.

Thank you very much for your fast answer.