The Great Python Indentation Betrayal

The eternal Python indentation saga strikes again! You stare at the error message for 20 minutes, convinced line 5 is flawless, only for Python to smugly inform you that the problem is actually a missing bracket on line 4. The compiler equivalent of "it's not what you said, it's how you said it." Nothing like wasting half your morning on an error that's not even where the error message claims it is. And people wonder why programmers drink coffee by the gallon...