下面是几种不同实现方式的Python代码来打印200以内的所有素数，并以空格分割： ### 方法一 ```python def issushu(n): if n < 2: return False else: for i in range(2, int(pow(n, 0.5)+1)): if n % i == 0: return False return True def printsushu(): for i in range(0, 201): if(issushu(i)): print(i, end=" ") printsushu() ``` ### 方法二 ```python from math import sqrt def prime_number(n): if n == 1: return False for i in range(2, int(sqrt(n)) + 1): if n % i == 0: return False return True for i in range(1, 200): if prime_number(i): print(i, end=" ") ``` ### 方法三 ```python def su(n): if n < 2: return False for i in range(2, int(pow(n, 0.5)+1)): if n % i == 0: return False return True def s(): for i in range(0, 201): if(su(i)): print(i, end=" ") s() ``` ### 方法四 ```python from math import sqrt def is_prime(): for i in range(2, 201): a = 1 for j in range(2, int(sqrt(i))+1): if i % j == 0: a = 0 if a == 1: print(i, end=' ') is_prime() ``` ### 方法五 ```python def isPrime(n): if n < 2: return False for i in range(2, int(pow(n, 0.5)+1)): if n % i == 0: return False return True def printPrime(): for i in range(0, 201): if(isPrime(i)): print(i, end=" ") printPrime() ```