【小题目】：list元素按照出现次数排序

list=[5,5,8,9,7,6,5,7,5,8,1,8,4,7] #5,8,7,9,6,1,4
result=[]
def socet(arge):
    count=1
    for index,item in enumerate(arge):
        item_next=arge[index+1]
        if arge.count(item)>=arge.count(item_next):
            if item in result:
                pass
            else:
                result.append(item)
        count+=1
        if len(arge)==count:
            for i in arge:
                if i in result:
                    pass
                else:
                    result.append(i)
            return result

print(socet(list))