#-*-coding:utf-8-*-
L = [('Bob',75),('Adam',92),('Bart',66),('Lisa',88)]

def by_name(t):
    return t[0]
L1 = sorted(L, key = by_name)
print(L1)

def by_score(t):
    return t[1]
L2 = sorted(L, key = by_score , reverse = True)
print(L2)
