Page 444 - ComputerScience_Class_11

Difference between List[] and Tuple()
Here are the differences between List and Tuple in Python:

Features List [ ] Tuple ( )
Definition A sequence data type that is mutable A sequence data type that is immutable
Mutability Elements can be changed, added or removed Elements cannot be changed after creation
Syntax Uses square brackets [ ] Uses parentheses ( )

Speed Slower compared to tuple Faster than list
Memory Usage Uses more memory Uses less memory
Usage Used when data needs modification Used for fixed or read-only data
Example a = [1, 2, 3] b = (1, 2, 3)

Importance of Tuple over List
Tuples have some advantages over lists in Python.
• Safety: A tuple cannot be modified after creation, which helps prevent accidental changes to the data.

• Speed: Since tuples are immutable, Python can process them faster than lists.
• Memory Efficient: Tuples consume less memory compared to lists.

Accessing Different Elements in a Tuple
Tuple elements cannot be changed, but they can be accessed using their index number.

Program 11: To access elements stored in a tuple variable.
Program 11.py

File Edit Format Run Options Window Help

# Creating a tuple of birds
birds = ("Eagle", "Sparrow", "Owl")
# Accessing element at index 0
print("Element at index 0", birds[0])
# Accessing element at index 1
print("Element at index 1", birds[1])
# Accessing element at index 2
print("Element at index 2", birds[2])

Output

Element at index 0 Eagle
Element at index 1 Sparrow
Element at index 2 Owl

12.4.4 Characteristics of Sequence data types in Python
There are some characteristics of Sequence data types in Python:
• Collection of Elements: Sequence data types store multiple items in a single variable.

• Position-Based Access: Elements are accessed using their position (index number).

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