Module 2: Literals and variables

Represent numbers, text, and truth values as literals, then name and reuse them with variables that follow PEP 8.

Exam	PCEP-30-03
Section	1. Computer Programming and Python Fundamentals (17% of the exam)
Objectives	1.3.1 and 1.3.2
Exam questions	About 2, one per objective

By the end of this module you can do everything below. The objectives and their wording come from the official PCEP-30-03 syllabus.

1.3.1 Represent data using Python literals

• Recognize the basic Python data types represented by literals, including int, float, str, and bool.
• Use Boolean literals to represent logical values.
• Use integer and floating-point literals to represent numeric values.
• Explain limitations in the accuracy and representation of floating-point numbers.
• Construct string literals using appropriate quotation marks.

1.3.2 Create and manage variables according to Python naming conventions

• Create variables and assign values.
• Explain how variables reference values during program execution.
• Select valid and meaningful variable names.
• Distinguish between valid and invalid Python identifiers.
• Apply relevant PEP 8 recommendations to variable names and assignment statements.