Python Prefix Removal Precision Sequence

Inputs: [input strings], [literal prefix], [expected outputs], [Python version]. Compare str.removeprefix with str.lstrip for a literal prefix. Explain that lstrip removes a set of leading characters, while removeprefix removes one matching prefix only. Require Python 3.9 or later and include a counterexample where lstrip removes too much. Produce a 12-second token animation removing one matching prefix while leaving a second repeated prefix untouched. Include one concrete verification step that checks the defining task detail against the supplied inputs. Use [audience] and [tone] to calibrate presentation.

Confirm required reference images and timing inputs are present before generating. Keep objects, identities, spatial relationships and light direction consistent. Render the clip when video generation is supported; otherwise supply a timed shot list, reference checklist and generation-ready prompt, labeled as a production plan. Do not claim rendered output without an actual file. Check the opening, transition and final frame against the stated counts and geometry.