Python Tuples

Python tuples are a  data structure that is an  unchangeable, ordered sequence of elements. Since these elements are unchangeable, their values cannot be modified. Using tuples in Python are great for grouping data and each tuple element is called an item.

Python Internal Tuple Methods

Python Tuple Creation

Creating a list in Python is easy by using parenthesis () and surrounding the values with quotes if needed.

Input:

groceries = ("milk", "eggs", "apples", "bread")

print(f"Here's my grocery list: {groceries}")

Output:

Here's my grocery list: ('milk', 'eggs', 'apples', 'bread')

Python Tuple Access

In order to access the items within a tuple, the index number will be executed to refer to the tuple item.

Input:

print(f"My favorite grocery item is: {groceries[2]} ")

Output:

My favorite grocery item is: apples

Python Tuple Looping

Within a tuple, a loop can print out each item that is in the list using a for loop.

Input:

for x in groceries:
  print(f"Grocery item: {x} ")

Output:

Grocery item: milk 
Grocery item: eggs 
Grocery item: apples 
Grocery item: bread

Python Tuple Validating Item

Python tuple item validating will determine if an item is in the tuple by using the keyword, in.

if…else Example 1

Input:

if "oranges" in groceries:
    print("Yes, oranges are in the tuple.")
else:
    print("No, oranges are not in the tuple.")

Output:

No, oranges are not in the tuple.

if…else Example 2

Input:

if "apples" in groceries:
    print("Yes, apples are in the tuple.")
else:
    print("No, apples are not in the tuple.")

Output:

Yes, apples are in the tuple.

Python Tuple Length

The internal  method, len() will determine the length(item count)  of a tuple.

Input:

print(f"The length of the groceries tuple is: {len(groceries)} ")

Output:

The length of the groceries tuple is: 4

Python tuple() Constructor

The tuple() constructor method to create a new tuple.

Input:

new_groceries_tuple = tuple(("milk", "eggs", "water", "chicken", "asparagus", "juice", "chips", "cookies"))

print(f"New groceries tuple using the tuple() constructor method: {new_groceries_tuple} ")

Output:

New groceries tuple using the tuple() constructor method: ('milk', 'eggs', 'water', 'chicken', 'asparagus', 'juice', 'chips', 'cookies')