2 posts tagged with "debugging"

Off-by-one errors (OBOEs) are among the most common logic bugs, even for seasoned developers. These bugs occur when a loop or operation goes one iteration too far or one iteration too short—leading to incorrect results, missed elements, or crashes.

They usually occur in:

• Loops
• Array indexing
• Ranges
• Substring operations

Have you ever counted your toys and accidentally said you had 11, but really only had 10? That’s kind of what an off-by-one error is in Python!

It’s a tiny mistake where your program counts 1 too many or 1 too few. These mistakes are super common, even for professional programmers.