Problem with list.remove() method

[Alvaro Combo]

Dear Chris,

Thank you very much for you reply... 
For a newcomer to Python the Hell is in the details... :-).

You are absolutely right... and I just used the index instead of the value.

Regarding you other (most relevant) comments, I absolutely agree... BUT in those cases... I was aware :-). But since it is in fact an exercise... and having N^2 operations... is not important. Still your comments are quite pertinent.

Once again, Thank you and best regards

ACombo