TypeError：'int'对象在python中引用二维数组时不可下标

Question

I am trying to find the lowest score in a list of contestant numbers and scores. On line 6 I get the error:

if score[u[1]] == score[0]:
TypeError: 'int' object is not subscriptable

I am trying to check through the whole 2d array with the loop to find which score matches with the lowest score awarded and retrieve the contestant number

for x in range(contestants):
    CN = x+1
    score1.insert(x,[[CN],[score[x]]])
    score.sort
    for u in score:
        if score[u[1]] == score[0]:
            KO = score[u[0]]
            print (KO)

Scores looks like this:

 for i in range (contestants):
    j1 = int(input("Judge 1 enter your score for the contestant: "))
    j2 = int(input("Judge 2 enter your score for the contestant: "))
    j3 = int(input("Judge 3 enter your score for the contestant: "))
    j4 = int(input("Judge 4 enter your score for the contestant: "))
    j5 = int(input("Judge 5 enter your score for the contestant: "))
    print("Round over, next contstant")
    scores = [j1,j2,j3,j4,j5]

    scoreJ1.append(scores[0])
    scoreJ2.append(scores[1])
    scoreJ3.append(scores[2])
    scoreJ4.append(scores[3])
    scoreJ5.append(scores[4])


    scores.sort()
    scores.pop(0)
    scores.pop(3)
    #proud of this
    score.insert(i,scores[1]+scores[2]+scores[0])

Thanks for the help.

Answer 1

The error message you are getting is TypeError: 'int' object is not subscriptable . Let's break this down:

• TypeError is telling you that you are trying to apply an inappropriate operation somewhere
• is not subscriptable is telling you that the inappropriate operation is putting a pair of [ ] after something.
• 'int' object is not subscriptable is telling you that you are trying to do it to an int.

Now let's consider the line of code which generated this error:

if score[u[1]] == score[0]:

Notice that there are three pairs of [ ] placed directly after something: one of those somethings must have type int . There are therefore 3 candidates

1. score
2. u
3. score

So, we conclude that either score or u is an integer.

Looking at the context you provided

for u in score:

This line would have failed if score were not some iterable. int s are not iterable, therefore we conclude that score is not an integer. Which leads us to conclude that u (which is some element of the container score ) is an integer.

Other comments about your code (which contains many problems):

1. It's suspicious that on one line you refer to score1 (to which you do not refer anywhere else) while you use score on the next. Are you sure that the former shouldn't just be score ?

2. score.sort accesses the sort method of score but does not call it. This makes sense in Python if you want to store that method somewhere, or pass it somewhere, but you are not doing that. So you have almost certainly forgotten to call the function: you do this by adding () after it, like so: store.sort() .

3. In your second code block scoreJ1 and friends appear not to be defined anywhere, so this code cannot work, unless there is something else that you are not showing.

That should give you plenty to think about.