Errors and exceptions

The essential idea

Errors and exceptions gives you one practical part of Object-Oriented Programming (OOP). Start by naming the input, the change, and the expected result. This mental model matters before any syntax rule.

Run a tiny experiment

Use a minimal example. Predict what changes, run it, then explain the observed result.

// Explore Errors and exceptions with one focused example.
value = 0
print(value)

Output:

0

Avoid this trap

Do not memorize Errors and exceptions in isolation. Change one value in a small example and use feedback to correct your understanding.

Quick check

Quick check: What is a good first practice for Errors and exceptions?

• Run one small focused example.
• Memorize without testing.
• Ignore feedback.