#使用for i in rangetotal = 0list = [10, 20, 8, 20, 30, 50]for i in range(0, len(list)):total += list[i]print(‘列表中的元素之和是:’, total)#使用while循环total = 0ele = 0list1 = [11, 5, 17, 18, 23]while (ele < len(

#嵌套分支year = 2600if year % 4 == 0 and year % 100 != 0:print(f’{year}是闰年’)elif year % 400 == 0:print(f’{year}是闰年’)else:print(f’{year}是平年’)#单分支year = 2000if (year % 4 ==0 and year % 100 != 0) or (year %