输入一个正整数判断它是不是素数
from math
import sqrt
def main():
num = int(input(
'请输入一个正整数: '))
end = int(sqrt(num))
is_prime =
True
for x
in range(
2, end +
1):
if num % x ==
0:
is_prime =
False
break
if is_prime
and num !=
1:
print(
'%d是素数' % num)
else:
print(
'%d不是素数' % num)
if __name__ ==
'__main__':
main()
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