python循环结构练习

以下是两个Python循环结构的练习例子：

1. 输出区间内的素数

from math import sqrt

a, b = map(int, input().split())

for i in range(a, b+1):
    x = 2
    while x <= int(sqrt(i)) and i % x != 0:
        x += 1
    if x > int(sqrt(i)):
        print(i, end=' ')

2. 输出1到n之间的偶数

n = int(input())

for i in range(1, n+1):
    if i % 2 == 0:
        print(i, end=' ')