Python Data Structures

Python Data Structures

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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

Challenge: Create a List

Lists Are Mutable

Append() Method

Insert() Method

Deleting Elements

Removing Elements

List Comprehensions

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

Popitem() Method

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

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.

Update() Method

Accessing the Elements of a Set

Remove() and Discard() Methods

Creating a Tuple

In Python, a tuple is a data structure that consists of a sequence of values (elements) enclosed in parentheses, with elements separated by commas. Tuples are similar to lists, but the key distinction is that tuples are immutable data structures.

Immutable data structures can't be modified after they're created. Tuples, just like lists, can hold any number of elements, and the data type of each element can vary. It's crucial to note that a tuple with only one element is defined with a comma following the element, as shown:

Note
As demonstrated in the example, you need to add a comma after the single element to create a valid one-element tuple.

Let's explore how to create tuples.

Creating an empty tuple:

Creating a tuple with strings:

Creating a tuple using the tuple() function:

Tarea

You need to create a tuple containing strings, such as:

'apple', 'apricot', 'banana', 'grape', 'mango', 'peach', 'pineapple'.

¿Todo estuvo claro?

Sección 3. Capítulo 1

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Creating a Tuple

In Python, a tuple is a data structure that consists of a sequence of values (elements) enclosed in parentheses, with elements separated by commas. Tuples are similar to lists, but the key distinction is that tuples are immutable data structures.

Immutable data structures can't be modified after they're created. Tuples, just like lists, can hold any number of elements, and the data type of each element can vary. It's crucial to note that a tuple with only one element is defined with a comma following the element, as shown:

Note
As demonstrated in the example, you need to add a comma after the single element to create a valid one-element tuple.

Let's explore how to create tuples.

Creating an empty tuple:

Creating a tuple with strings:

Creating a tuple using the tuple() function:

Tarea

You need to create a tuple containing strings, such as:

'apple', 'apricot', 'banana', 'grape', 'mango', 'peach', 'pineapple'.

¿Todo estuvo claro?

Sección 3. Capítulo 1

toggle bottom row

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