Python小游戏 猜3个骰子点数大小游戏

#猜点数大小游戏，3个骰子，小于等于9为小，大于等于10为大
import random
def sum1(point1,point2,point3):

a_list=[point1,point2,point3]
sum1=sum(a_list)
if sum1>=10:
    sum1_str='Big'
else:
    sum1_str='Small'
return sum1_str

A=input(‘Big or Small:’)
point1 = random.randrange(1,7)
point2 = random.randrange(1, 7)
point3 = random.randrange(1, 7)
B=sum1(point1,point2,point3)
if A==B:
print(‘You win! Your points are: {} {} {}’.format(point1,point2,point3))
else:
print(‘You lose! Your points are: {} {} {}’.format(point1,point2,point3))