Replace string in a list using python and save it with different variable

I am trying to replace a string with another string in a list, but failed and I don’t know why.

For example, I have a list:

predicts = 
[['__label__1'],
 ['__label__0'],
 ['__label__1'],
 ['__label__1'],
 ['__label__0'],
 ['__label__1']]

i want to replace __label__1 with “OK” and __label__0 with “NOT OK” and save it in different variable using :

pred_label = []
for i in predicts:
  if i == '__label__1':
    pred_label.append("OK")
  else:
    pred_label.append("NOT OK")

but it failed to replace any of it

Answer

The predicts variable has two dimensions, try:

pred_label = []
for i in predicts:
    if i[0] == '__label__1':
        pred_label.append("OK")
    else:
        pred_label.append("NOT OK")
print(pred_label)