Tuples in Python - Core Data Structures

What is a Tuple?

A tuple is an ordered, immutable collection of items in Python. Unlike lists, tuples cannot be changed after creation. They can contain elements of different types.

Creating Tuples

my_tuple = (1, 2, 3)
mixed_tuple = (1, "hello", 3.14, True)

Examples

# 1. Accessing elements
colors = ("red", "green", "blue")
print(colors[1])  # Output: green

# 2. Nested tuples
nested = ((1, 2), (3, 4))
print(nested[0])    # Output: (1, 2)
print(nested[0][1]) # Output: 2

# 3. Tuple unpacking
point = (10, 20)
x, y = point
print(x)  # Output: 10
print(y)  # Output: 20

# 4. Single element tuple (note the comma)
single = (5,)
print(type(single))  # Output: <class 'tuple'>

# 5. Using tuples as dictionary keys
my_dict = { (1, 2): "point A", (3, 4): "point B" }
print(my_dict[(1, 2)])  # Output: point A