for循环
# 一.:用for循环求100-999之间的水仙花数
# 水仙花数指的是:一个数字他的每个位置的数的立方之和等于他自己
# 比如: 153=1的三次方+3的三次方+5的三次方
for i in range(100,999):
num1=(i//100)%10
num2=(i//10)%10
num3=i%10
sum1=num1**3+num2**3+num3**3
if i == sum1:
print(i)运行结果：
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