Python Agregar a la lista con índice
list.insert(index, element)
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list.insert(index, element)thislist = ["apple", "banana", "cherry"]
thislist.insert(1, "orange")
>>>
>>> a = [1, 2, 4]
>>> print a
[1, 2, 4]
>>> b = a[:2] + [3] + a[2:]
>>> print a
[1, 2, 4]
>>> print b
[1, 2, 3, 4]