Unit 7: Files & Errors

Lessons

1. 1 Introduction to File HandlingWhat file handling is, persistent storage, text vs binary files, common use cases 15–20 min
2. 2 Opening and Closing FilesHow to open files, file modes, how to close files, file objects, common mistakes 20–25 min
3. 3 Reading Data from FilesReading entire files, reading line by line, iterating through files, common patterns 20–25 min
4. 4 Writing Data to FilesWriting to files, writing multiple lines, write vs append, formatting output 20–25 min
5. 5 Working with File PathsRelative vs absolute paths, path joining, the pathlib module, cross-platform compatibility 20–25 min
6. 6 Using the with Statement for File OperationsThe with statement, why it's better, context managers, multiple files, best practices 15–20 min
7. 7 Understanding Errors and ExceptionsWhat errors are, types of errors, common exceptions, error messages, why exceptions exist 20–25 min
8. 8 The try and except Blockstry and except, handling specific exceptions, error messages, else and finally 25–30 min
9. 9 Raising and Customizing ExceptionsRaising exceptions, when to raise, custom exceptions, error messages, best practices 20–25 min
10. 10 File and Error Handling in Real ProjectsReal-world patterns, data logging, user input handling, best practices, complete examples 30–40 min

11. End of unit test

    Ten multiple choice questions worth 7 points each and one free response problem worth 30, so 100 in total. Score 70 or more to finish Unit 7 and unlock Unit 8.

    Take the Unit 7 test