List and Tuple - Difference

 The key difference between lists and tuples in Python is their mutability:

• List: Ordered and mutable, meaning you can change its elements (add, remove, or modify them).
• Tuple: Ordered but immutable, meaning once it's created, its elements cannot be changed.

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Example: List

# Creating a list
my_list = [1, 2, 3]

# Modifying the list
my_list[0] = 10  # Update an element
my_list.append(4)  # Add a new element
my_list.remove(2)  # Remove an element

print(my_list)  # Output: [10, 3, 4]

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Example: Tuple

# Creating a tuple
my_tuple = (1, 2, 3)

# Trying to modify the tuple
# my_tuple[0] = 10  # This will raise an error: TypeError: 'tuple' object does not support item assignment

# Accessing elements (this is allowed)
print(my_tuple[0])  # Output: 1

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Key Characteristics:

1. Mutability:

   • Lists allow you to modify their elements.
   • Tuples do not allow modification after creation.

2. Performance:

   • Tuples are slightly faster than lists due to their immutability.

3. Usage:

   • Use lists when the data needs to change (e.g., dynamically adding/removing elements).
   • Use tuples for fixed collections of data (e.g., coordinates (x, y) or configuration data).

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Practical Difference Example:

List Use Case:

# Shopping list: It changes over time
shopping_list = ["milk", "bread"]
shopping_list.append("eggs")
print(shopping_list)  # Output: ['milk', 'bread', 'eggs']

Tuple Use Case:

# Days of the week: Fixed and unchanging
days_of_week = ("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday")
print(days_of_week)  # Output: ('Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday')