why it has no output？

Question

j=1
s=0
for i in range(2,1001):
while j < i:
if i%j==0:
s=s+j
j+=1
if i==s:
print(s)

Answer 1

Assuming you want to print all the perfect numbers between 2 and 1000... Put
s=0
j=1
Inside the for loop (at the beginning), and not before it. Then it should work. You need to reset them for each i 😊