sum = 0 和sum = 0.0计算结果都73.5，所以有什么区别吗？麻烦老师解答一下？
L = [75, 92, 59, 68]
sum = 0.0
for p in L:
sum = sum + p
print sum / 4
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L = [75, 92, 59, 68]
sum = 0.0
for p in L:
sum = sum + p
print sum / 4
2019-09-11
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