###sorted 
print(sorted([1,2,-3,4,5],reverse=True,key = abs))
l = ['angel','Violet']
print(sorted(l,key=str,reverse=True))

def get_name(t):
    if not isinstance(t,tuple):
        return
    print(t[0])
    return t[0]

l = [('Bob', 75), ('Adam', 92), ('Bart', 66), ('Lisa', 88)]
print(sorted(l,key = get_name))