已知一个数字列表，求列表中心元素。

nums = [1, 3, 4, 5, 34, 634, 32, 5, 1,0]
if len(nums)%2!=0:
    print(nums[(len(nums)//2)])
else:
    print(nums[(len(nums)//2-1):(len(nums)//2+1)])

已知一个数字数列，求所有元素和：

num1 = 0 #元素和
nums = [1, 3, 4, 5, 34, 634, 32, 5, 1,0]
for yuansu in nums:
    num1 += yuansu
print(num1)
print('==============================================')

已知一个数字数列,输出所有奇数下标元素。

nums = [1, 3, 4, 5, 34, 634, 32, 5, 1,0]
for index in range(len(nums)):
    if (nums[index]) % 2 != 0:
        print(index,end='')
print()

已知一个数列，将列表所有元素乘以2

num3=[]
nums = [1, 3, 4, 5, 34, 634, 32, 5, 1,0]
for num2 in nums:
    # print(str(num2*2))
    num3.append(str(num2*2))
print(num3)

7.已经一个数字列表(数字大小在0~6535之间), 将列表转换成数字对应的字符列表

# 例如: list1 = [97, 98, 99]  -> list1 = ['a', 'b', 'c']
list1 = [97, 98, 99]     #list1 = ['a', 'b', 'c']
for x2 in list1:
    print(chr(x2))

8.用一个列表来保存一个节目的所有分数，求平均分数(去掉一个最高分，去掉一个最低分，求最后得分)

nums = [66, 90, 45, 88, 55, 87]
high_num = 0
small_num = 1000
for num4 in nums:
    if high_num < num4:
        high_num = num4
print('最大的数是:%d' % high_num)
for num4 in nums:
    if small_num > num4:
        small_num = num4
print('最小的数是：%d' % small_num)
print((sum(nums)- small_num - high_num))
print('========================================')

9.有另个列表A和B，使用列表C来获取两个列表中公共的元素

# 例如: A = [1, 'a', 4, 90]  B = ['a', 8, 'j', 1] --> C = [1, 'a']
A = [1, 'a', 4, 90]
B = ['a', 8, 'j', 1]
c = []

for x in A:
    for y in B:
        if x==y:
            z=(str(x))
            c.append(z)
print(c)