li=[ ]
>>> li.insert=(1, 'gj')
Traceback (most recent call last):
  File "<pyshell#49>", line 1, in <module>
    li.insert=(1, 'gj')
AttributeError: 'list' object attribute 'insert' is read-only

>>> li=[2, 5, 6]
>>> li.insert(2, 'rt')
>>> li
[2, 5, 'rt', 6]

>>> lst = []
>>> lst.insert(0, 'a')
>>> lst.insert(0, 'b')
>>> lst
['b', 'a']
>>>