python27-syntax-reviewer

Replace Python 3 constructs with 2.7 equivalents: use .format() or % instead of f-strings, # type: comments instead of inline annotations, super(MyClass, self) instead of bare super(), and explicit (object) inheritance for all classes.

Check for f-strings, inline type hints, yield from, raise ... from, and division behavior changes. This Skill provides a red-line mapping table plus an 8-point checklist covering encoding headers, class inheritance, and xrange usage.

NetEase MC runs on Python 2.7.18, so any Python 3 syntax such as f-strings or inline type annotations causes the engine to crash. Downgrade all syntax to Python 2.7 equivalents before deployment.

Use xrange() for large loops (over 1000 iterations) because it avoids building a full list in memory. range() is acceptable for small loops where memory overhead is negligible.

Use comment-style annotations like '# type: (int) -> str' on the line after the function definition, or '# type: str' after variable assignments. Inline annotation syntax is not supported in Python 2.7.