Spent 2 days on a missing semicolon, turns out it was a hidden character

I was debugging a script for my weather data project in Python and kept getting a syntax error on line 47, but the code looked totally fine to me. After 2 days of copy pasting into different editors and checking line by line, I found out the file had a weird invisible Unicode character from when I pasted a comment from a forum post. Has anyone else wasted serious time on invisible characters or encoding issues when you're just starting out?

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bailey.jennifer24d ago

Remember that time I spent 4 hours hunting down a bug that turned out to be a space character? Yeah, that was me. I even rewrote the whole function from scratch before realizing the original was fine, just cursed. It's like the universe punishes you for copy pasting code from random Stack Overflow posts at 2am. I swear my editor shows invisible characters now as a permanent paranoia thing. Honestly, I think half my gray hairs are from encoding issues, not actual hard problems.