a = 100
s = ''
while 100 <= a <1000:
x = 0
b = str(a)
for i in b:
x += pow(eval(i),3)
if x == a:
s += b+','
a += 1
print(s[:-1])
输出结果:153,370,370,371,407
为什么370会出现两次呢
a = 100
s = ''
while 100 <= a <1000:
x = 0
b = str(a)
for i in b:
x += pow(eval(i),3)
if x == a:
s += b+','
a += 1
print(s[:-1])
输出结果:153,370,370,371,407
为什么370会出现两次呢
i为7的时候x==a成立,i为0的时候也成立,故输出了两次。if x==a
判断部分应放在for循环外面