测试 def is_prime(n): if n <= 1: return False if n == 2: return True if n % 2 == 0: return False for i in range(3, int(n**0.5) + 1, 2): if n % i == 0: return False return True
number = 29 if is_prime(number): print(f"{number} 是质数") else: print(f"{number} 不是质数")