你如何修复以下代码?
我想获得i mod 5 == 1的元素片.
data = "8|9|8|9|8|9|8|9|9|8|9|8|9|8|9|8"
arra = map(int,data.split("|"))
sums += [sum(arra[i % 5==1:(i + 4) % 5==1]) // Problem here
for i in range(0, len(arra), 4)]
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