[Tutor] column heading

[SUMAN KANTI ROY]

a=[1,2,3,4,5,6,7,8,9,10]
arr=[[1,2],[2,23],[4,5]]
dic={}
for i in range(0,len(arr)):
    if arr[i][0] not in dic:
        dic[arr[i][0]]=arr[i][1]
arr1=[]
def find_key(val,dic):
    for i in dic.keys():
        if dic[i]==val:
            return i
new_arr=sorted(dic.values(),reverse=True)
ans= [[0 for i in range(3)] for i in range(len(new_arr))]
for i in range(len(new_arr)):
    ans[i][0]=a[i]
    ans[i][1]=find_key(new_arr[i],dic)
    ans[i][2]=new_arr[i]
print(ans)

0/p=====[[1, 2, 23], [2, 4, 5], [3, 1, 2]]
I want to make it 3 column matrix ,,,with column heading
name['device',R.B.N','CQI']
please guide me...