L = [('Bob', 75), ('Adam', 92), ('Bart', 66), ('Lisa', 88)]
def by_name(t):
a=list(j for i in t for j in i if type(j)==str)
return sorted(a)
print(by_name(L))
def by_score(t):
a = list(j for i in t for j in i if type(j) == int)
return sorted(a,reverse=True)
print(by_score(L))
人渣14396