Tuples

Python Tuples

A tuple is an ordered, immutable collection of elements that allows duplicates. Unlike lists, tuples cannot be modified after creation, making them useful for fixed data structures.

Tuple Operations

Good for: Ordered, immutable, allows duplicates

Basic Operations

• tuple[i] → Access element at index i

t = (10, 20, 30)
print(t[1])  # Output: 20

• tuple[i:j] → Slice from i to j-1

t = (10, 20, 30, 40)
print(t[1:3])  # Output: (20, 30)

• tuple.count(x) → Count occurrences of x

t = (1, 2, 2, 3, 4, 2)
print(t.count(2))  # Output: 3

• tuple.index(x) → Find first occurrence of x

t = (10, 20, 30, 40)
print(t.index(30))  # Output: 2

• tuple + tuple2 → Concatenation

t1 = (1, 2, 3)
t2 = (4, 5, 6)
print(t1 + t2)  # Output: (1, 2, 3, 4, 5, 6)

• tuple * n → Repeat n times

t = (1, 2)
print(t * 3)  # Output: (1, 2, 1, 2, 1, 2)

• len(tuple) → Get length

t = (10, 20, 30)
print(len(t))  # Output: 3

Tuple Unpacking

Tuples allow unpacking values into separate variables.

a, b, c = (1, 2, 3)
print(a, b, c)  # Output: 1 2 3

Conversion

Convert list or set to a tuple.

lst = [1, 2, 3]
t = tuple(lst)
print(t)  # Output: (1, 2, 3)

s = {4, 5, 6}
t = tuple(s)
print(t)  # Output: (4, 5, 6) (unordered due to set behavior)