Tuple Methods

Because tuples are immutable, they support only two built-in methods:

t = (1, 2, 3, 2, 4, 2)

print(t.count(2))    # 3
print(t.index(2))    # 1 (first occurrence)
# print(t.index(9))  # ValueError: 9 is not in tuple

Why so few methods?

Methods like append(), remove(), sort(), insert() do not exist for tuples because they would need to modify the tuple in place — which immutability forbids.

t = (5, 3, 1, 4)
# t.sort()          # AttributeError: 'tuple' object has no attribute 'sort'
sorted_list = sorted(t)   # use the built-in sorted() instead -> returns a list
print(sorted_list)          # [1, 3, 4, 5]

Converting between list and tuple when you need mutability

t = (1, 2, 3)
lst = list(t)       # convert to list to modify
lst.append(4)
t = tuple(lst)       # convert back to tuple
print(t)              # (1, 2, 3, 4)

Nested tuple example

students = (("Riya", 92), ("Amit", 78), ("Zoya", 85))
for name, marks in students:
    print(name, "scored", marks)