python simple if else structure wrong comparison

This is my code

for i,val in enumerate(DS3Y_pred_trans):
    if val < 1.5:
        DS3Y_pred_trans[i] = 1
    else:
        DS3Y_pred_trans[i] = 2

There are values less than 1.5 in the list, but the out is all 2s.

What am I missing?