"object is unsubscriptable" What does it means?

[peachdot]

Just wondering..what should i do if this error came out?

[bvdet]

It means you have attempted to read an index or slice of a non-sequence type object. Example:

>>> 1[1]
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
TypeError: unsubscriptable object
>>> [1,2,3][1]
2
>>>