I have a list of couple like this ('01 0 00 0',key0), ('01 0 11 0',key1), ('01 0 11 1',key2) and I would like to pick the elements with only the third and fourth bit equal to 1. So for example in this case I'll get ('01 0 11 0',key1) and ('01 0 11 1',key2).
How can I pick the couple with these elements ?
You can use a list comprehension:
l = [i for i in list_couples if i[0].split(" ")[2]=="11"]
If the spaces are not always the same:
l = [i for i in list_couples if i[0].replace(" ", "")[3:5]=="11"]