Lesson 13 · Tuples — Level I · Guide

August 13, 2026 · Bridge Academy Python Program

Learning goals

• Build tuples with parentheses: (1, 2, 3), (), and single-element (5,) (notice the comma).
• Index and slice tuples the same way as lists: t[0], t[-1], t[1:3], t[::-1].
• Understand that tuples are immutable — you cannot change an item once the tuple is built.
• Compare tuples and lists: same indexing/slicing/in/len, different brackets and mutability.
• Unpack a tuple into separate variables and swap two variables using a tuple.
• Count occurrences with .count(), find positions with .index(), concatenate with +, and repeat with *.

This lesson covers PCEP-30-02 objective 3.2.