from collections import namedtuple

# Define a named tuple for representing a point
Point = namedtuple('Point', ['x', 'y'])

# Create instances
p1 = Point(10, 20)
p2 = Point(x=30, y=40)

print(f"Point 1: {p1}")
print(f"X coordinate of p1: {p1.x}") # Access by name
print(f"Y coordinate of p2: {p2[1]}") # Access by index

# Named tuples are immutable
try:
    p1.x = 15
except AttributeError as e:
    print(f"Error trying to modify p1.x: {e}")

# Useful for returning multiple values from a function in a readable way
def get_user_data(user_id):
    User = namedtuple('User', ['id', 'name', 'email'])
    # In a real app, this would fetch from a database
    if user_id == 1:
        return User(id=1, name="Alice", email="alice@example.com")
    return None

user = get_user_data(1)
if user:
    print(f"User Name: {user.name}, Email: {user.email}")