说起来太羞愧了，我连简单的python 都不会

Question

hlep me,please !

Answer 1

第一个
方法1

a = [1,2,3,4,5,6]
a = a[::-1]
print(a)

方法2

a = [1,2,3,4,5,6]
a.reverse()
print(a)

第二个

a = [4,3,5,1,2,7,6]
n = sorted(a)[len(a)//2]
print(n)

第三个

s = input("请输入一个字符串：")
s = s[-1]+s[:-1]
print(s)

第四个

def isprime(n):
    if n<=1:
        return False
    for i in range(2,n):
        if n%i==0:
            return False
    return True
li = [2,1,7,6,11,10]
for i in range(len(li)-1,-1,-1):
    if isprime(li[i]):
        li.pop(i)
print(li)

第五个

li = [
    [1,2,3],
    [4,5,6],
    [7,8,9]
]
s = 0
l = len(li)-1
for i in range(l+1):
    s += li[i][i]
    if i != l-i:
        s += li[i][l-i]
print(s)

如有帮助，望采纳！谢谢!