Cursos /

Python Data Structures

1. List

What is a list? A list is an ordered collection that can be modified. It also allows for duplicate elements.

Creating a List

Nested List

Challenge: Create a List

2. Dictionary

What is a dictionary? A dictionary is an ordered collection that can be changed, but it doesn't allow duplicate entries. It consists of `key:value` pairs, which are used to optimize its structure.

Creating a Dictionary

Challenge: Craft the Dictionary

Extraction of Information

Dictionary Comprehensions

3. Tuple

What is a tuple? A tuple is an ordered collection that cannot be altered. It can have duplicate elements. While it's similar to a list, the values in a tuple can be of any type and are indexed by integers. Although not mandatory, it's common to enclose the values of a tuple in parentheses, making them easier to understand in Python.

Creating a Tuple

Accessing Elements of a Tuple

Concatenation of Tuples

Delete a Tuple

Update a Tuple

Adding Items

Challenge: Concatenate Tuples

4. Set

What is a set? In Python, a `set` is an unordered collection that is both `iterable` and `mutable`, with no repeated elements. While the order of items in a set isn't fixed, it can include a variety of elements. A key benefit of using sets over lists is their highly efficient method for determining if an element exists within the set.

Creating a Set

Add() Method

Update() Method

Accessing the Elements of a Set

Remove() and Discard() Methods

Clear() Method

Adding Items

To add elements to a tuple, you can use the same approach that's effective for deletion. Since tuples are immutable, we can't directly add an element to them without encountering an error. However, by converting the tuple to a list, you can easily make the desired additions. Let's delve into an example.

Another way to add an element to a tuple is by concatenating it with another tuple. This is something we explored a few chapters back. If you want to add one or more elements, simply create a new tuple with these elements and combine it with the original tuple. Here's an illustrative example.