s = ‘2kd4-1124*2|^2sdAmZ%fkMcv‘def fun(s):    li = []    li2 = []    tu = ()    for i in s:        li.append(i)    print(‘排序前：‘,end=‘‘)    print(li)    n = len(li)    for i in range(n-1):        for j in range(n-1-i):            if li[j]<li[j+1]:                li[j],li[j+1] = li[j+1],li[j]    if n%2==0:        for i in range(n//2):            li2.append(‘({},{})‘.format(li[i],li[n-1-i]))    else:        for i in range(n//2):            li2.append(‘({},{})‘.format(li[i], li[n-1-i]))        li2.append(‘({})‘.format(li[n//2]))    print(‘排序后：‘,end=‘‘)    print(li)        return tuple(li2)tu = fun(s)print(‘新格式：‘,end=‘‘)print(tu)