SPOJ.com - Problem PRIME1

’’’‘
nt = int(input())
x = []
for i in range(nt):
i = input()
x.append(i)
y = [c.split() for c in x]
for i1, n1 in enumerate(y):
strt = int(n1[0])
end = int(n1[1])
prime = [True for i in range(strt, end + 1)]
p = strt
while p * p <= end:
# If prime[p] is not changed, then it is a prime
if prime[p]:
# Update all multiples of p
for i in range(p * p, end + 1, p):
prime[i] = False
p += 1
for z in prime:
if prime[z]:
print(z+strt, “\n”)
print("\n")
’’’'
Why does this not work? It is always showing -

prime[i] = False
IndexError: list assignment index out of range

Please help me out here.