# -*- coding: utf-8 -*-
from operator import itemgetter

L = [('Bob', 75), ('Adam', 92), ('Bart', 66), ('Lisa', 88)]

L1 = sorted(L, key=lambda s: s[0].upper())
L2 = sorted(L, key=lambda s: s[1], reverse=True)
L11 = sorted(L, key=itemgetter(0))
L22 = sorted(L, key=itemgetter(1), reverse=True)