How to get a column name using row and the value given in that row?

Question

How to get a column name if we have row name and the value which is there in that row.

For example:

In attached image, if we know the row name is GameCube and the value in that row is 7.608333, then how to get column name as Action,Adventure?

for col in ign_data:
    if ign_data[col]['GameCube'] == 7.608333:
        print(ign_data.columns[col])

I tried it using for loop but getting value error:

ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().