Debugging Basics

Summary

Systematically finding why a script isn't working as expected — using print statements, breakpoints, or a debugger, rather than randomly changing code and hoping it works.

• 1Practice using a debugger (or strategic print statements) to trace through a failing script.
• 2Learn to isolate a problem to its smallest reproducible case before trying to fix it.
• 3Build the habit of reading the full error message before assuming what went wrong.