Course Content

Python Data Structures

1. Mastering Python Lists

Creating Lists in Python: Declaring and Initializing Lists List Indexing in Python: Accessing Elements Efficiently Working with Nested Lists in Python Python List Length: Measuring and Managing List Size Modifying Lists in Python: Updating and Changing Elements Using the append() Method: Adding Elements to Lists Using the insert() Method: Placing Elements at Specific Positions Deleting Elements in Python Lists: Removing Items Safely Using the remove() Method: Deleting Specific Elements from Lists

2. Mastering Python Dictionaries

Creating a Dictionary in Python: Storing Key-Value Pairs Accessing Dictionary Values Accessing Dictionary Keys Adding Items to a Dictionary: Updating Key-Value Pairs Using the del Keyword: Removing Dictionary Entries Using the pop() Method: Deleting Elements with Return Values Using the popitem() Method: Removing the Last Inserted Item Using the clear() Method: Emptying a Dictionary Completely

3. Mastering Python Tuples

Creating a Tuple in Python: Defining Immutable Data Structures Accessing Elements in a Tuple: Indexing Technique Concatenating Tuples in Python: Merging Immutable Sequences Deleting Tuples in Python: Removing References to Tuples Updating Tuples in Python Adding Items to a Tuple: Alternative Approaches Using Lists Counting Elements in a Tuple: Using the count() Method Finding Elements in a Tuple: Using the index() Method for Lookup

4. Mastering Python Sets

Creating a Set in Python: Defining Unordered Collections Using the add() Method: Adding Single Elements to a Set Using the update() Method: Merging Multiple Elements into a Set Accessing Elements in a Set: Iteration and Membership Testing Using the remove() and discard() Methods Using the clear() Method: Removing All Elements from a Set

Creating a Tuple in Python: Defining Immutable Data Structures

In Python, a tuple is a data structure that consists of a sequence of values 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:


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single_movie = ("Inception",)  # Single-element tuple
print(single_movie)

Note

Without the comma, Python will interpret the parentheses as regular grouping, not as a tuple.


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not_a_tuple = ("Inception")
print(type(not_a_tuple))

Let's explore how to create tuples.

Creating an empty tuple


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empty_tuple = ()
print(empty_tuple)

Creating a tuple using the `tuple()` function

The tuple() function converts an iterable into a tuple. For example, you can convert a string into a tuple of its characters:


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movie_title = tuple("Inception")
print(movie_title)

Creating a tuple from a list

You can also use the tuple() function to create a tuple from a list:


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movie_list = ["Inception", "Interstellar", "Tenet"]
movies_tuple = tuple(movie_list)
print(movies_tuple)

Task

Swipe to start coding

Your goal is to initialize the tuple space_movies.

Use the following movies:
'2001: A Space Odyssey', 'Interstellar', 'Star Wars: Episode IV - A New Hope', 'Gravity', 'The Martian'
To initialize the tuple, use parentheses ().
Tuples are immutable, meaning you cannot add elements to them after they are created. Make sure to include all the movies in the tuple during initialization.

Note

It's better to copy and paste the list of movies to avoid mistakes in the titles.

Solution

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Section 3. Chapter 1

Creating a Tuple in Python: Defining Immutable Data Structures


              12
            
single_movie = ("Inception",)  # Single-element tuple
print(single_movie)

Note

Without the comma, Python will interpret the parentheses as regular grouping, not as a tuple.


              12
            
not_a_tuple = ("Inception")
print(type(not_a_tuple))

Let's explore how to create tuples.

Creating an empty tuple


              12
            
empty_tuple = ()
print(empty_tuple)

Creating a tuple using the `tuple()` function

The tuple() function converts an iterable into a tuple. For example, you can convert a string into a tuple of its characters:


              12
            
movie_title = tuple("Inception")
print(movie_title)

Creating a tuple from a list

You can also use the tuple() function to create a tuple from a list:


              123
            
movie_list = ["Inception", "Interstellar", "Tenet"]
movies_tuple = tuple(movie_list)
print(movies_tuple)

Task

Swipe to start coding

Your goal is to initialize the tuple space_movies.

Use the following movies:
'2001: A Space Odyssey', 'Interstellar', 'Star Wars: Episode IV - A New Hope', 'Gravity', 'The Martian'
To initialize the tuple, use parentheses ().
Tuples are immutable, meaning you cannot add elements to them after they are created. Make sure to include all the movies in the tuple during initialization.

Note

It's better to copy and paste the list of movies to avoid mistakes in the titles.

Solution

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 3. Chapter 1

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Python Data Structures

Creating a Tuple in Python: Defining Immutable Data Structures

Creating an empty tuple

Creating a tuple using the tuple() function

Creating a tuple from a list

Solution

Creating a Tuple in Python: Defining Immutable Data Structures

Creating an empty tuple

Creating a tuple using the tuple() function

Creating a tuple from a list

Solution

Creating a tuple using the `tuple()` function

Creating a tuple using the `tuple()` function