AttributeError: 'str' object has no attribute 'append'

Question

>>> myList[1] 'from form' >>> myList[1].append(s)  Traceback (most recent call last):   File "<pyshell#144>", line 1, in <module>     myList[1].append(s) AttributeError: 'str' object has no attribute 'append' >>> 

Why is myList[1] considered a 'str' object? mList[1] returns the first item in the list 'from form' but I cannot append to item 1 in the list myList.

I need to have a list of lists; so 'from form' should be a list. I did this:

>>> myList [1, 'from form', [1, 2, 't']] >>> s = myList[1] >>> s 'from form' >>> s = [myList[1]] >>> s ['from form'] >>> myList[1] = s >>> myList [1, ['from form'], [1, 2, 't']] >>>  

Answer 1

myList[1] is an element of myList and its type is string.

myList[1] is a string, you can not append to it. myList is a list, you should have been appending to it.

>>> myList = [1, 'from form', [1,2]] >>> myList[1] 'from form' >>> myList[2] [1, 2] >>> myList[2].append('t') >>> myList [1, 'from form', [1, 2, 't']] >>> myList[1].append('t') Traceback (most recent call last):   File "<stdin>", line 1, in <module> AttributeError: 'str' object has no attribute 'append' >>>  

Answer 2

If you want to append a value to myList, use myList.append(s).

Strings are immutable -- you can't append to them.