摘要：
for i in range(100, 1000): if str(i) == str(i)[::-1]: print(i) # 输出结果 101 111 121 131 141 151 161 171 181 191 202 212 222 232 242 252 262 272 282 292 阅读全文
摘要：
while True: year = int(input("请输入年份：")) if year % 4 == 0 and year % 100 != 0: print("%s是闰年" % year) elif year % 400 == 0: print("%s是闰年" % year) else: 阅读全文
摘要：
一、总和 i = 1 sum = 0 while i <= 100: sum += i i += 1 print(sum) 二、奇数和 i = 1 sum = 0 while i <= 100: if i % 2 != 0: sum += i i += 1 print(sum) 三、偶数和 i = 阅读全文