Append Items
To add an item to the end of the list, use the append() method:
append()Insert Items
To insert a list item at a specified index, use the insert() method.
The insert() method inserts an item at the specified index:
Example
thislist = ["apple", "banana", "cherry"]
thislist.insert(1, "orange")
print(thislist)Note
As a result of the examples above, the lists will now contain 4 items.
Extend List
To append elements from another list to the current list, use the extend() method.
tropicalThe elements will be added to the end of the list.
Add Any Iterable
The extend() method does not have to append lists , you can add any iterable object (tuples, sets, dictionaries etc.).
Example
thislist = ["apple", "banana", "cherry"]
thistuple = ("kiwi", "orange")
thislist.extend(thistuple)
print(thislist)