Exceptions, File I/O, and JSON

This unit develops students’ ability to make programs robust and persistent by teaching exception handling, error propagation, and file operations in Python. Students will learn to handle and raise exceptions, work with text and binary files, and serialize/deserialize data using JSON to prepare for application development and data-driven projects.

Learning Objectives

• Analyze function return patterns and exception flows to design predictable, testable program behavior
• Apply Python error-handling constructs (try, except, else, finally, raise) to catch, handle, and propagate runtime errors without crashing applications
• Demonstrate file I/O competency by opening, reading, writing, closing, and iterating over text and binary files safely
• Evaluate and implement data serialization workflows by organizing data structures, serializing to JSON, and loading JSON files for use in programs