Data types in Python

A list of lists.

L = [' aaa ', ' BBB ', 89]

A list is an ordered set of mathematical meanings, that is, the elements in the list are arranged in order.

Check:

How do I get the nth data from a list? The method is to get the specified element in the list by index.

You can also get the elements in the list in reverse. L[-1] Represents the last element 89.

Increase:

List.append () to add a new element to the list trailer

List.insert (n,element), adds the element (the new one that represents the addition) to the position n in the list.

By deleting:

Can be deleted by the list pop() method, the Pop () method always deletes the last element of the list, and it also returns the element.

Change:

To assign a value to an index in a list, you can replace the original element with the new element directly, and the list contains the same number of elements.

Second, tuple tuples

Like list, a tuple cannot be modified once it is created.

Create an example: T = (' Adam ', ' Lisa ', ' Bart '), note that the tuple uses () to wrap the elements together.

If there is only one element in a tuple, add one after the element, such as T = (' Adam ',)

Data types in Python