Real programs don't just live in memory — they read and write files, and they inevitably run into things going wrong. This module covers how to work with files safely and how to handle errors gracefully instead of letting them crash your program.
It starts with file objects: opening files for
reading, writing, and appending, and working with text and binary
data. From there it covers context managers and
the with statement, which make sure resources like
files get cleaned up properly even when something goes wrong. It
closes with exception handling using
try, except, else, and
finally, so your code can respond to errors instead
of stopping dead.
Watch the lessons in order, then continue on to Standard Library & Third-Party Packages.
Opening files for reading, writing, and appending; working with simple text files, multiple open files, and binary data.
Using the with statement and __enter__/__exit__ methods so resources like files get set up and cleaned up automatically.
Handling errors and exceptions with try, except, else, and finally, and controlling program flow when things go wrong.