列表求和，打印出其表达式（简单python)

Question

已知

lis1=[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110]
#如何打印出这样的式子()
110+55+44+22+20+11+10+5+4+2+1=284

Answer 1

lis1=[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110]

for i in range(len(lis1)-1, -1 , -1):
    if i == 0:
        print(lis1[0], end='=')
    else:
        print(lis1[i], end='+')
print(sum(lis1))

Answer 2