Module 13: File handling

Read, write, and append text files safely with with, and process CSV data with the csv module.

Exam	PCEP-30-03
Section	5. File Handling and Module Imports (14% of the exam)
Objectives	5.1.1 and 5.1.2
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.

5.1.1 Work with text files

• Open text files using appropriate modes, including r, w, and a.
• Read data from a text file.
• Write and append data to a text file.
• Use the with statement to manage file access safely.
• Recognize common errors when opening or accessing files.

5.1.2 Work with CSV files

• Explain the basic structure of a CSV file.
• Import and use the csv module.
• Read CSV data using csv.reader().
• Write CSV data using csv.writer().
• Process rows and values read from a CSV file.