然后調用該函數輸出100以？

代碼示例：

from math import sqrt

def is_prime(n):

if n == 1:

return False

for i in range(2, int(sqrt(n))+1):

if n % i == 0:

return False

return True

count = 0

for i in range(1, 1000):

if is_prime(i):

count = count + 1

print('{}:{}'.format(count, i))